你可能感兴趣的试题
was, since been, after was, when has been, since
have been; left had been; left am; had left come; had left
have been; went had been; went am; had been come; had been
had enjoyed was enjoying have enjoyed have been enjoying
have been, left had been, left am, had left come, had left
have been；left had been；left am；had left come；had left
had enjoyed was enjoying enjoyed had been enjoying
two hours two hours ago I
After I left school Before I moved here When I went to the beach Since I was ten years old
ago; for before; since ago; since ago; in
have been; left had been; left am, had left come; had left
study; for studying; since studying ; for to study; since
since ten years ten years ago for ten years ten years before
have been；left had been；left am；had left come；had left
have been; left had been; left am; had left come; had left
湘公网安备 43130202000226号