题目内容
. Mary is one of the girls who ______ always on time.
| A.is | B.am | C.are | D.Was |
C
解析
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— Hi, Tom.Any idea where Mary is? .
一 She ______in the reading room.I saw her there just now.
| A.shall be | B.should have been |
| C.should be | D.might have been |