题目内容

Unfortunately he ___and fell over, tearing a hole in his trousersand grazing his knee.

A. tripped.
B. trip
C. tripled
D. stripped

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After being questioned for several hours, the suspect finally___that he had stolen the diamond.

A. conferenced
B. confer
C. conferred
D. confessed

In the race he will ___against world-class runners, which is areal challenge to him.

A. match
B. compete
C. game
D. run

If your computer goes wrong frequently,I suggest you go and see acomputer ___.

A. consultant.
B. consultation
C. consultative
D. services

____the manufacturer's repeated claims that the product is safe,many people have stopped buying it.

A. Despite.
B. However
C. Even
D. Since

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