Maria has _____ trouble _____ math, so she often asks her math teacher for help.
A．much; understandingB．no; with
C．many; understandingD．not; to understand
A

試題分析：句意：Maria理解數(shù)學(xué)有很多困難，所以他經(jīng)常向數(shù)學(xué)老師求助。Trouble困難，不可數(shù)名詞，可用much修飾，many修飾可數(shù)名詞服飾；have trouble doing sth.做某事有困難，動詞用ing形式，故選A。
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