题目内容
() 13. —I’m having trouble up with the rest of the class.
—Please don't .
A. to catch;give up B. catching;give up
C. to catch;look up D. catching;look up
13. B
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题目内容
() 13. —I’m having trouble up with the rest of the class.
—Please don't .
A. to catch;give up B. catching;give up
C. to catch;look up D. catching;look up