单项选择题

One of the requirements for a fire is that the material ______ to its burning temperature.

A. heated

B. be heated
C. to be heated

D. being heated

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单项选择题

Bill dare try, ______ he

A. doesn’t
B. does

C. daren’t
D. dares

单项选择题

Lisa stood motionless at the end of the diving board, hands at her sides, heels slightly raised, every muscle ______ action.

A. anticipated

B. to anticipate
C. anticipating

D. having been anticipating

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