I USED ... FORTY CIGARETTES A DAY.A. SMOKE B. TO SMOKE C. SMOKING...

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

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747. I used ... forty cigarettes a day.

A. smoke B. to smoke C. smoking D. smoked