题目内容
Bob was away from school for two weeks. So now he has to work hard ________ the rest of the class.
[ ]A
. to catch up B. to catch up withC
.catches up with D.catching up with
答案:B
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题目内容
Bob was away from school for two weeks. So now he has to work hard ________ the rest of the class.
[ ]A
. to catch up B. to catch up withC
.catches up with D.catching up with