2 chia động từ trong ngoặc ờ thì HTHT
12. I (just/ see)………. Andrew and he says he ……..already (do)………. about half of the plan.
13. I ………..just (decide)……… to start working next week.
14. He (be)…………. at his computer for seven hours.
15. She (not/ have) ……………any fun a long time.
