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.(共15小题.每小题1分.满分15分).21. I was born in New Orleans, Louisiana, a city name will create a picture of beautiful trees and green grass in our mind. A. whose B. of which C. that D. which
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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