They…………..in touch since they…………..school 2 years ago.

Câu hỏi :

They…………..in touch since they…………..school 2 years ago.

A. kept/ have left

B. have kept/ leave

C. have kept/ left

D. keep/ had left

* Đáp án

C

* Hướng dẫn giải

HTHT since QKĐ

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