Chi acac dong từ trong ngoặc ra thì QKD và HTHT :
1, We ( never watch ) ............ that TV programme .
2, We ( watch ) ........... a good programme on TV last night .
3, He ( read ) ...... that novel many times before .
4, He ( read ) .......that novel again doring my last vacation.
5, I ( have ) ......... a little trouble with my car last week .
6, However, I ( have ) ........no trouble with my car since then .
7, I ( not see ) ........... John for a long time . I ( see ) ............ him 3 weeks ago.
8, The school bell ( ring ) ........ . We must go now .
9, I ( meet ) .... Mary last night . She ( become ) .......... a very big girl