Andrew _______ the test before so he _______ it very easy

Câu hỏi :

Andrew _______ the test before so he _______ it very easy.

A. had done/ found

B. had done/ had found

C. did/ found

D. did/ had found

* Đáp án

A

* Hướng dẫn giải

QKHT before QKĐ

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