1) how fast......... when the accident happened ? A. are you driving Bwere you.. C. Did you... D. Had.... 2) HE WAS busy ...... his homework. A. to do b . doing c. for doing d.that he was doing
2 câu trả lời
1. B: were you driving
=> thì quá khứ tiếp diễn
2. B
=> busy + Ving: bận rộn với việc gì
