题目列表(包括答案和解析)
The secretary worked late into the night, a long speech for the president．
A．to prepare B．preparing
C．prepared D．was preparing
The secretary worked late into the night, ________a long speech for the president．
A．to prepare
B．preparing
C．prepared
D．was preparing
The secretary worked late into the night, _________ a long speech for the president．
to prepare
preparing
prepared
was preparing
The secretary worked late into the night, ________ a long speech for the president．
to prepare
preparing
prepared
was preparing
The secretary worked late into the night, ________ a long speech for the president．
to prepare
preparing
prepared
was preparing
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