They let their children _______ up late at weekends. A. to stay B. stayed C. staying D. stay

Câu hỏi :

They let their children _______ up late at weekends.

A. to stay

B. stayed

C. staying

D. stay

* Đáp án

D

* Hướng dẫn giải

Cấu trúc: let O V nguyên mẫu

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