When he was alive, the old scientist used to say that knowledge ____ from practice and he gained his

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• — What would you do if it ____ tomorrow? — We have to carry it on, since we've got everything r
• —Would you like to join us in playing the game?—I’m sorry, but my homework ______ by now.A．hasn’t fi
• I_____ violin lessons every two weeks, but I think I ‘ll make it every week from next month.A．am hav
• .It’s the first time this term we_______an examination after class in the afternoon.A．didn’t haveB．d
• --- Can you guess if they _______ to play basketball with us?--- I think they'll come if they _
• I can guess you were in a hurry. You _____ your sweater inside out.A．had wornB．woreC．were wearingD．a
• Tom ____ the CD player for two weeks.A．has lentB．has borrowedC．has boughtD．has had-英语
• —I failed again. I wish I _________ harder.—But you _________.A．had worked； hadn’tB．worked； don’tC．h
• Xiao Pei said she ______ Hainan for 3 months.A．has been inB．had been inC．had been toD．had gone to-英语
• Every means ______ prevent the water from ______.A．are used to; pollutingB．is used to; pollutingC．is
• —Do you think we should accept that offer? —Yes，we should，for we______ such bad luck up till now，and
• Not until____________the exam _________ the importance of doing homework.A．had he failed; he realize
• —Isn’t it a great surprise that I happened to meet my university English teacher at the South Bank P
• ----Who ______the computer? I want to use it. ----Timmy. He ______ it for a week.A．borrowed, has bor
• Mary said it was at least five years since he ______ a good drink.A．enjoyedB．was enjoyingC．had enjoy
• The new computers_______to the village school as present last month.A．are givenB．givenC．were givenD．
• Iin the house whichbooks and magazines.A．am used to live;use to keepingB．used to live;has been used
• All but one ＿＿ take part in the conference ＿＿ tomorrow.A．is going to； that is to take placeB．are go
• Dear me! Just _________ at the time! I _________ no idea it was so late.A．look, haveB．looking, hadC．
• Lily _____ a book about China last month but I don’t know whether she has finished it. A．wrote B．ha
• Mr. Wang _____ table tennis well, though he suffers from a waist pain and _____ it for a long time.A
• Our team was ahead during the first half, but we ________ in the last ten minutes.A．had lostB．would
• The strong evidence as well as these new facts _____ prove the prisoner’s innocence the next time th
• The children ____ very quiet；I wonder what they ____ up to.A．were； are beingB．are being；areC．are；do
• The tree must ________ three times a week.A．waterB．is wateringC．be wateredD．waters-英语
• –What’s that noise? –Oh, I forgot to tell you. The new machine ______.A．was testedB．will be testedC．
• —Is Robert abroad ?—I think so. He _____ for a better job, but he didn’t get it.A．hopesB．has hopedC．
• Mother promised she _____ me an English-Chinese dictionary. A．is buying B．will buy C．would buy D．has
• They said they ______ do some sports if it was fine.A．were going toB．wentC．would goingD．were going-英
• —I’m sorry to keep you waiting. —Oh, not at all. I _____ here only a few minutes. A．am B．was C．have
• —Who is Clarke? —_____ him yet? I saw you shaking hands with him at the meeting. A．Haven’t you met
• “I suppose you _____ that report yet？” “I finished it yesterday, as a matter of fact.”A．didn’t finis
• —____ Betty this morning?— Not yet, but she is sure to be here before noon.A．Have you seen B．Will y
• What do you think the children______when we get home?A．will doB．are going to doC．will be doingD．are
• — Is Tom still smoking?— No. By next Saturday he ____ for a whole month without smoking a single ci
• —Why didn’t you buy the calculator?—I ______, but Mother ______ allow me.A．would want to; didn’tB．ha
• She didn't tell me ________.A．which room she livedB．she lived in which roomC．which room did she
• When I got to the school, the first class _____. A．had begun B．began C．is beginningD．has begun-英语
• —I ran into the back of a truck yesterday and damaged my car badly.—I suppose you ___________ too fa
• —Don’t you feel surprised to see Bruce at the meeting ?—No. I really didn’t think here .A．he has bee
• —_____ my glasses? —Yes, I saw them on your desk a minute ago. A．Do you see B．Have you seen C．Had yo
• Our football team _____ every match so far this year, but we still have three more games to play. A．
• Hello. You ____68442936. I’m sorry I’m unable to answer your call right now.A．reachedB．are reachingC
• — Sorry, I forget to post the letter for you.— Never mind, _____ it myself tonight.A．I’m going to p
• Jane _____ some washing this time yesterday. A．is doing B．had done C．was doing D．did-英语
• -----Do you know if the old man is still living?----- I'm sorry. He _________. He ______ for tw
• Silk ________ in _______ China.A．produce, the southeastB．is produced, southeastC．is grown, southeast
• ---The food here is nice enough. ----My friend_________me a right place. A．introducesB．introducedC．h
• —My nephew will come tomorrow.— But I’d rather he _____ the day after tomorrow.A．cameB．is comingC．wi
• --- Had we been more careful, the accident might not have happened. --- But we _____ at that time. A