题目内容
桵r Wang, I have trouble _________ the text.
桼emember _________ it three times at least.
A. to understand;reading B. understanding;reading
C. understanding;to read D. to understand;to read
答案：C
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题目内容
桵r Wang, I have trouble _________ the text.
桼emember _________ it three times at least.
A. to understand;reading B. understanding;reading
C. understanding;to read D. to understand;to read