13. My grandfather refuses to go to bed early, __________ I am afraid he is going to catch a bad cold.
(A) and
(B) but
(C) or
(D) however。

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統計： A(85), B(67), C(5), D(42), E(0) #2236514

詳解 (共 1 筆)

#4497344
我的祖父拒絕早點去睡覺，       我...
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