—Tom is so worried about the test that he said he was going to study all night. —Tell him he should quit ______ and get some help.A.to have worriedB.to worryC.worryingD.from worrying
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C解析试题分析：考查动名词做宾语：quit doing放弃做…，句意：--汤姆很担心考试，以至于他说要整晚学习。--告诉他不要担心，寻求一些帮助。选C。考点：考查动名词做宾语
点评：有些动词必须加动名词做宾语：如Consider doing sth考虑做某事；imagine doing sth现象做某事；mind doing sth介意做某事等。