单项选择题

Victor promised to keep his boss ______ what was going on in the factory.

A．lo be informed
B．informing of
C．inform about
D．informed of
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单项选择题
I won't give you an account of all my wanderings, though I have been most indefatigable; for I am keeping, as I told you before, a most ______ journal.
A．exhausted
B．exhaustive
C．exhausting
D．exhaustion
单项选择题
It was not until he closed the door ______ he ______ he forgot Io take the keys with him.
A．that, realized
B．did, realize
C．which, realized
D．when, realized
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