He was caught in the rain last night.That his cold.A.ought to bring aboutB.may have brought about

He was caught in the rain last night.That his cold.
A.ought to bring about
B.may have brought about

选B,may have + 过去分词,表示对过去事情的推测.这句话的意思是 昨天晚上他被雨浇了,那可能是他感冒的原因.

B
也许是生病的原因。表示一种推测。