单项选择题

He checked his car carefully lest it（）on the way.

A、breaks down
B、broke down
C、would break down
D、should break down

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单项选择题

We should be able to do the job for you quickly,（）you give us all the necessary information.

A、as if
B、provided that
C、in case
D、so that

单项选择题

His mother died when he was five, his father never remarried, and by the time he was eight he （）in three different countries.

A、 had lived
B、was lived
C、was living
D、will have lived

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