37. I have difficulty in__________ my brother to work hard. He is lazy and
does not pay attention to my words.
(A)to persuade
(B)persuaded
(C) persuade
(D)persuading
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統計: A(3), B(16), C(20), D(100), E(0) #1502091
統計: A(3), B(16), C(20), D(100), E(0) #1502091