摘要：从A.B.C.D四个选项中.选出可以填入空白处的最佳选项.并填在答题卡上.1. --- ? ---I’m not sure ,but he might have been ill in bed. A. What do you think has happened to Tom B. What do you think Tom has happened C. Do you think what has happened to Tom D. Do you think what Tom has happened
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从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。Some pre-school children go to a day care center, __________ they learn simple games and songs.
- A.then
- B.there
- C.while
- D.where
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
The manager suggested an earlier date ____________ the meeting.
- A.on
- B.for
- C.about
- D.with
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
I won't call you, ________ something unexpected happens.
- A.unless
- B.whether
- C.because
- D.while