1 . We had just begun to work________ the machine broke down.
| A．when | B．as | C．while | D．after |
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2 . — Was it under the tree ________ you were away talking to him?
— Yes, but when I got back there, my bike was gone.
— Yes, but when I got back there, my bike was gone.
| A．that | B．where | C．which | D．while |
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3 . I was about to watch a football match ________ my mother called me to buy drinks.
| A．while | B．as | C．when | D．until |
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4 . Mr. Black walked around and offered help________ we were doing an experiment.
| A．while | B．although | C．until | D．unless |
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2021-07-01更新
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211次组卷
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2卷引用：天津市东丽区2020-2021学年高一下学期期末质量检测英语试题
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5 . As we know, green employees cannot develop well ________they lack chances of practising.
| A．before | B．when | C．while | D．unless |
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6 . —Well, thank you. You're a good friend, and you've changed my life.
—You're welcome. Hey, you are making some real money, you can take your friend out for a nice thank-you dinner.
—You're welcome. Hey, you are making some real money, you can take your friend out for a nice thank-you dinner.
| A．now that | B．unless | C．as though | D．while |
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7 . Tim was happy to take on all the housework ________ his wife went out to work.
| A．while | B．until | C．before | D．since |
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8 . She was thinking of her friend ________ Tom called her.
| A．as | B．when | C．until | D．while |
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9 . We were playing in the park happily ________ it suddenly started to rain.
| A．while | B．since | C．after | D．when |
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10 . Multitasking reduces the quality of our work ______ it makes it hard for us to organize thoughts and remove irrelevant information.
| A．though | B．as | C．while | D．if |
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