问题

Christina wasn’t saying anything, but the professor smiled at her _______she had done something very clever

A:as if
B:now that
C:hristinawhile
D:though

正确答案是：

同类题型

Hey, I have a piece of good news to announce!–_________, were listening!

David Burt’s dream in China is to go into the west and ______ an early childhood school there.

Suddenly he ____________his mother in the crowd and ran to her

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Mike prefers to .