There is no doubtscientific knowledge is very important for teenagers. [ ]A. whether B. that C. if D

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• Though it was late, _____ he went on with his work. [ ]A. but B. and C. so D. \ -九年级英语
• Could you tell me _____ there is a hospital near here ? [ ]A. that B. what C. if D. which -八年级英语
• We'll go to the park _____ it doesn't rain tomorrow. [ ]A. so B. if C. but D. and -七年级英语
• —I don't know _______ today is your birthday. 一It doesn't matter. [ ]A. whether B. where C
• Make sure_____he is at home or not before you call on him. [ ]A. if B. whether C. what D. how-九年级英语
• Miss Wang asked me ________ I was busy with the test those days. [ ]A. that B. if C. when D. what-九年
• ______ it rained heavily, they arrived at Shanghai Grand Theatre in time. [ ]A. But B. Though C. Bec
• He met many problems ______ he was going over his lessons.[ ]A. before B. as soon as C. since D. whi
• _______ I have a lot of housework to do, I still finish my homework on time. [ ]A. Unless B. IfC. Al
• _____ his parents are at home, he cooks by himself. [ ]A. If B. Even though C. As if D. Whether -九年级
• ______ we are different from each other, we are good friends. [ ]A. Although B. Because C. So D. But
• Mr Green was watching TV ______ someone knocked at the door. [ ]A. while B. when C. since D. after -
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• _____ John failed to climb to the top of the mountain several times, he didn't give up. [ ]A. A
• ______ Michael Jackson has left us, his songs will be in our hearts forever. [ ]A. However B. Becaus
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• 单项选择。She didn't go to school yesterday (昨天)she was ill. [ ]A. because B. so C. and D. but -七年级英
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