1 Put your wallet away. I have already paid for everything
2 . I have known her since I studied in the United States
3 . My best friend left for Paris two months ago , but I haven't received ( not ( receive ) a letter from him yet
( Câu này ở vế 2 bn thiếu S nha )
4 . We moved here in 1993 . We were here a long time
( câu này vế 2 mk ko chắc chắn lắm )