题目内容

Although the lecture had already been on for five minutes,I still was not able to find a chair____.

A. to sit
B. for to sit on
C. to sit on
D. for sitting

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Surely her daughter would make an even bigger effort ______ her?

A. please
B. pleased
C. to please
D. having pleased

Lots of empty boots were found under the old man’s bed. He must have done nothing but ______.

A. drink
B. to drink
C. drinking
D. drunk

The local health organization is reported ___ twenty-five years age when Dr. Adudon became its first president.

A. to be set up
B. being set up
C. to have been set up
D. having been set up

I heard him __the door

A. locking
B. to lock
C. lock
D. being locking

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