HE WORKED VERY HARD, ... HE PASSED THE EXAM EASILY.A. AND B. SO C...

Tiếng Anh 1000-cau-trac-nghiem-tieng-Anh-on-thi-thpt-quoc-gia-2018

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154. He worked very hard, ... he passed the exam easily.

A. and B. so C. but D. because