Mary might have phoned while we were out. A. Possibly Mary phoned while we were out. B. Unfortunately we were out while Mary phoned. C. We were sure Mary had phoned while we were out. D.

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Mary might have phoned while we were out.

Possibly Mary phoned while we were out.

Unfortunately we were out while Mary phoned.

We were sure Mary had phoned while we were out.

Mary ought to have phoned while we were out.

Giải thích

Đề: Mary có thể đã gọi điện đến khi chúng ta đi ra ngoài.

Cấu trúc: might + have + PII: có thể đã làm gì (diễn tả dự đoán có thể xảy ra trong QK)

→ các đáp án B, C, D đều không hợp nghĩa

Dịch: Có thể Mary đã gọi điện đến khi chúng ta đi ra ngoài.