21. His grade was behind most classmates. His teacher had to spend more time helping him_______ homework.
(A) at
(B) with
(C) by
(D) in

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統計： A(41), B(120), C(15), D(40), E(0) #2336811

詳解 (共 2 筆)

#4075346
根據https://tw.english...
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#5037769
  • help with
    幫忙    My father used to help me with my lessons. 我父親過去常常幫助我復習功課。
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