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.并在答题上将该项涂黑.21. She feeds the baby milk and hay her cattle. A. on, to B. to, on C. with, on D. on, with
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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