1: When Tom ________at the office yesterday, everyone was working.
A. has arrived B. arrived C. arrives D. to arrive
2: “Let’s go out for some coffee tonight, ________?” Kate asked her friend.
A. don’t we B. shall we C. can’t we D. are we
( giải thích hộ mình tại sao bn chọn đáp án đó nhé Cảm ơn nhiều .....)