The bus won't stop ______ you ring the bell.
Giải bởi Vietjack
Chọn đáp án D
Tom…. for the examination last week if he ______ that it would be so difficult.
Tom got to the station in time. If he______ the train, he ______ late for his interview.
If he had been looking where he was going, he ______ into the wall.
