问题
选择题
If you are weak _______ a subject, _______ and asking a teacher for advice can help.[ ]
A. at; working hard
B. in; work hard
C. at; work hard
D. in; working hard
答案
答案：D
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If you are weak _______ a subject, _______ and asking a teacher for advice can help.[ ]
A. at; working hard
B. in; work hard
C. at; work hard
D. in; working hard
答案：D