单项选择题

If a baby bird stays ______ for two or three weeks after leaving the nest, it has a fair chance of becoming an adult.

A) living
B) lively
C) alive
D) live
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You should never ______ your promise to a child.
A) go back on
B) go after
C) go in for
D) go over
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A burning cigarette he threw into the wastepaper basket ______ fire to the hotel.
A) made
B) set
C) caused
D) caught
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