Children are very curious（）
A. at heart
B. on purpose
C. in person
D. by nature
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The （）of autumn was in the air and she went to fetch a coat.
A. tepid
B. chilly
C. chill
D. cool
The manager of the hotel requests that their guests （）after 11: 00 p. m..
A. not to play loud music
B. shouldn't play loud music
C. don't play loud music
D. couldn't play loud music
They always keep on good （）with their next-door neighbors for the children's sake.
A. friendship
B. terms
C. relations
D. relatives
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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