题目内容

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

试题分析：句意：Maria理解数学有很多困难，所以他经常向数学老师求助。Trouble困难，不可数名词，可用much修饰，many修饰可数名词服饰；have trouble doing sth.做某事有困难，动词用ing形式，故选A。
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