单项选择题

It was quite a long time()I recognized him.

A. after
B. before
C. when
D. since

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单项选择题
()some of this juice — perhaps you’ll like it.

A. Trying
B. Try
C. To try
D. Have tried
单项选择题
36().

A. indifferent
B. difficult
C. impossible
D. possible
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