—I'm not sure _________there are living things on the planets or not.—Even scientists aren&#039

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• _____it's difficult to her dream come true,she never gives up.[ ]A. ThoughB. UnlessC. BecauseD.
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• _____ the great teacher Zhang Lili was in hospital, many people hoped she would get better soon.[ ]A
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• _____ they look different,they have some similarities.[ ]A. But B. As C. Although D. When-八年级英语
• —What do you usually do______it's raining?—I usually watch TV.[ ]A. whyB. howC. whenD. wliere-七
• We couldn't go out _____ it is too cold today.[ ]A. but B. ifC. orD. because-七年级英语
• —Your French is so good. How long have you been in France?—_________ I was five.[ ]A. UntilB. SinceC
• He tried his best to solve the problem , ______difficultit was.[ ]A. howeverB. no matterC. whateverD
• Eddie was sleeping _______ Millie was reading a magazine.[ ]A. until B. whileC. beforeD. after-九年级英语
• I'm not very hungry,I'm thirsty.[ ]A. and B. butC. forD. or-八年级英语
• Companies give their products to film stars fans will buy them.[ ]A. becauseB. because of C. so that
• My sister doesn't like bread. She won't eat it _____she is very hungry. [ ]A. if B. when C
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• ―What can I do for you, sir?—I really like this shirt. I wonder _________ you have a larger one.[ ]A
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• I want to know _____you will come back at 8:00 pm tomorrow. [ ]A. that B. when C. whether -九年级英语
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• I don't know_________it will rain or not tomorrow.[ ]A. how B. whetherC.whenD. that-八年级英语
• Many of them turned a deaf ear to his advice,____they knew it tobe valuable.[ ]A. as ifB. now thatC.
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• ______ you’re tired, you’ve been working for hours.[ ]A. IfB. Because C. Though D. No wonder-九年级英语
• he's athletic,he isn't' good at playing basketball.[ ]A. BecauseB. ThoughC. ForD. Bu
• _________ she doesn’t do well in her study, she is friendly to others. [ ]A. Because of B. Even thou
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• Miss Zhao is very helpful. She often helps us ____we are in trouble.[ ]A. whether B. althoughC. when
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• While flying,a bat makes a sound which hits things and comes back to its ears. In this way it's
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• The family had to stay at the hotel, ______ it was raining hard.[ ]A. becauseB. althoughC. untilD. u