单项选择题

Not until ______ himself seriously ill.

A．he had completed the task did he find
B．had he completed the task did he find
C．he completed the task had he found
D．did he complete the task he had found

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热门试题

单项选择题

Outside my office window, there is a fire ______ on the right.

A．ladder
B．escape
C．steps
D．stairs

单项选择题

Kenya's Tsavo Game Park ______ Susan much of the wildlife park she had visited in New Jersey.

A．reminded
B．recalled
C．received
D．remembered