Ifyou are weak -----a subject .----and asking a teacher for advice can help .A.at working B in ,work hard C.in,working hard 为什么

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Ifyou are weak -----a subject .----and asking a teacher for advice can help .A.at working B in ,work hard C.in,working hard 为什么

Ifyou are weak -----a subject .----and asking a teacher for advice can help .A.at working B in ,work hard C.in,working hard 为什么
Ifyou are weak -----a subject .----and asking a teacher for advice can help .
A.at working B in ,work hard C.in,working hard 为什么

Ifyou are weak -----a subject .----and asking a teacher for advice can help .A.at working B in ,work hard C.in,working hard 为什么
C
be weak in 是固定短语,意思是在某方面差.
后面用现在进行时,看后面asking也是现在进行时就知道了.
work harding?harding是什么...
work才是动词啊!

be weak in 在某方面弱
后面的是 work harding 才对吧 working hard 和 asking。。。是后面的主语
所以选C