单项选择题

—I saw Anna in the library yesterday.—You______her; she is still abroad.

A．must not see
B．can't have seen
C．mustn't have seen
D．couldn't see
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单项选择题
If you had done as I told you, you ______.
A．Will succeed
B．would succeed
C．would have succeeded
D．should succeed
单项选择题
______to speak when the audience interrupted him.
A．Not until he began
B．No sooner had he begun
C．Hardly had he begun
D．Scarcely did he begin
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