问题描述：
I don't think they know ___(exact)what they're doing.
something interest/interesting?
instead ___
for him B of him C of he Dfor he
She ___(feel)a little sick near the end of the trip.
Allen said that he ____(teach）himself how to ride a bike years ago
something interest/interesting?
instead ___
for him B of him C of he Dfor he
She ___(feel)a little sick near the end of the trip.
Allen said that he ____(teach）himself how to ride a bike years ago
问题解答：
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