25. People often have trouble _____ attention to one thing because their brain wants to drift off to think about something else.
(A) to pay
(B) pay
(C) paying
(D) paid
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統計: A(550), B(170), C(922), D(108), E(0) #3345177
統計: A(550), B(170), C(922), D(108), E(0) #3345177
詳解 (共 3 筆)
#6247623
S + have + difficulty / problems / trouble / a hard time + V-ing
有困難、有問題、有麻煩
有困難、有問題、有麻煩
55
1