Astronautscanbeaffectedbyloneliness

发布时间:2020-07-27 11:10:05

Astronauts can be affected by loneliness for they have to sit in the spacecraft for weeks with very little ________ and no one ________.A.to do; to talkB.doing; to talk toC.to do; to talk toD.doing; to talk

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C解析使用不定式作定语时,注意不定式中介词的保留。
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