______ a good insulator(绝缘体) , rubber is often used in cables.A．Having beenB．To beC．BeD．Being-英语

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• Do you mind ______ alone at home?A．Jane leaving B．Jane having leftC．Jane’s being leftD．Jane to be le
• Seeing the sun _____ above the surface of the sea we burst out a shout of joy.A．to riseB．to raiseC．r
• Every minute is made full use of _______ our lessons.A．studyingB．to studyC．studyD．being studied-英语
• —What’s the matter with Tim?—Oh, Tim’s cellphone was left in a taxi accidentally, never ____ again.
• I found the cat____ under the bed, who had caught a mouse.A．hidingB．hiddenC．to hideD．having hidden-
• Those ___ to go to the exhibition should inform the office.A．not wantingB．who not wantC．not wantedD．
• She reached the top of the hill and stopped ________ on a big rock by the side of the path.A．to have
• In some parts of London, missing a bus means ________ for another hour. A．waitingB．to wait C．waitD．
• —The light in the office is still on. —Oh，I forgot ________. A．turning it offB．turn it off C．to turn
• If you get_______ in a foreign city, you’d better stay where you are and wait for your friends A．los
• We agree ______ here but so far she hasn’t turned up yet.A．having metB．meetingC．to meetD．to have met
• ______ a good insulator , rubber is often used in cables.A．Having beenB．To beC．BeD．Being-英语
• The child enjoyed _____ up the wooden bricks then knocking them down.A．addingB．pushingC．pilingD．form
• _______ of water makes Death Valley a desert, but it is by no means devoid.A．Lacking B．Being lack C
• The bad weather meant__________ the rocket launch（发射）for 48 hours,．A．delayingB．having delayedC．to de
• Russia will soon return 174 sq km of territory on the northeast border to China． more than 40 years
• To read Tolstoy and ____ to the nineteenth century Russian literature are two excellent reasons for
• That’s the best way we should think of _______the dying soldier.A．helpingB．savingC．operatingD．to sav
• Though ______, many laws of nature exist.A．not having been discoveredB．having not been discoveredC．
• Shanghai is the first city in the world ____a high-speed maglev train, from the city to Pudong Airpo
• At the beginning of class, the noise of desks _____ could be heard outside the classroom. A．opened a
• Not only ______ polluted but ______ crowded. A．was the city; were the streetsB．the city was; were th
• Please make my excuse at tomorrow’s meeting--- I’ve got too much work _____. A．to do to comeB．doing
• How pleased the emperor was _____ what the cheat said!A．hearingB．heardC．hearD．to hear-英语
• __ __ so much trouble, we failed to complete the task on time.A．FacedB．FaceC．FacingD．To face-英语
• The missing boys were last seen _____ near the river.A．playingB．to be playing C．playD．to play-英语
• ——How is it that you know she’s got back from the UK?——She ____ when I came out of the house this mo
• Oil prices have risen by32 percent since the start of the year,_____a record US $57.65 a barrel on A
• Seeing the sun _____ above the surface of the sea we let out a shout of joy.A．to riseB．to raiseC．ri
• Whom would you rather have _____ with you?A．to goB．goneC．goingD．go-英语
• Please tell me the way you thought of ___ the garden. A．take care of B．to take care of C．taking car
• Time should be made good use of ____ our lessons well. A．learningB．learnedC．to learnD．having learne
• _____at in this way, the present situation about birds flue doesn’t seem so disappointing.A．LookingB
• Children in China today have nothing ______.A．to worry B．worriedC．to worry aboutD．worrying about-英语
• It passes through their bodies, only _____ a little thicker and sweeter.A．gettingB．to getC．gotD．hav
• People cannot but feel _____, for they simply cannot understand how he could have made such a stupid
• --- I hear Warren _____ in a middle school.--- What? I can’t imagine him _____ as a teacher.A．teache
• The city was difficult ________, _________ was defended by an army of 6,000 men.A．to be taken; whic
• The discovery of new evidence led to__________A．the thief having caughtB．catch the thiefC．the thief
• —How wise of you to come round, but why?—________that all is right. A．SeeB．To seeC．SeeingD．For seei
• Robert is said _______ abroad, but I don’t know what country he studied in. A．to have studiedB．to st
• He got up early, ________ to catch the train.A．to hopeB．hopingC．hopeD．hoped-英语
• The library needs ______, but it will have to wait until Sunday.A．cleaningB．be cleanedC．cleanD．being
• I planned _____ to see you last week, but I was ill.A．to have comeB．to comeC．to be comingD．to have
• Every Saturday morning we can see that old woman __ ___ shopping.A．loaded withB．stocked withC．equipp
• Towards evening, the patient opened his mouth as if _____ something to his son.A．said B．say C．to sa
• The sun was shining brightly, _____ everything there _____ more beautiful.A．making; lookB．to make; l
• She was the firstabout it.A．to learnB．learningC．learningD．to have learned-英语
• I haven’t got any paper _____.A．to writeB．for writing C．to write inD．to write on-英语
• —You __________part in the party on time.—Sorry，I was delayed by the accident.A．are to takeB．have