By the time I at the airport my husband for me for an hour

Câu hỏi :

By the time I (arrive) ___________ at the airport, my husband (wait) _____________ for me for an hour.

* Đáp án

* Hướng dẫn giải

Đáp án: arrived-had waited (By the time QKĐ, QKHT) for an hour.

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