问题

What’s wrong with him? I haven’t seen him_____ last Wednesday. [ ]
A: since
B: on
C: by
D:until
B: on
C: by
D:until
正确答案是:
同类题型
I was very when I saw Tom wearing yellow clothes. He hates yellow.
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As students, ______, we should study hard to be well prepared for the future. [ ]
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