18. Since the road is wet this morning, _____ last night.
(A) it must rain
(B) it must be raining
(C) it must have rained
(D) it must have been rain

答案：登入後查看
統計： A(26), B(22), C(250), D(16), E(0) #2368916

詳解 (共 2 筆)

#5385759

must +have p.p. 表示過去猜測

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#5489818
may-might-mightmust-...
(共 31 字，隱藏中）
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