单项选择题

For a long time, Fred watched with delight the water that was running down the rocks and listened to （）sound.

A.its
B.heir
C.his
D.her

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There has been an increase in （）number of people looking for （）work.

A. /; the
B.the; the
C.the; /
D.a; the
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--I （）so much chocolate at yesterdays party. --Are you feeling sick now

A.shouldn't eat
B.shouldn't be eating
C.shouldn't have eaten
D.shouldn't be eaten
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