摘要：3． If you are weak a subject, and asking a teacher for advice can help．A．at; working hard B．in; work hardC．at; work hard D．in; working hard
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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
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 |
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
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