B. Chia thì hiện tại hoàn thành: 1.Tom (see)………………..this film before 2.I already (finish)…………………my exercise. 3.How long they (live)……………….here? They (live)………………………here since 1990. 4.My father (just wash)………………………..his car. 5.The students (discuss)………………………………the question recently. 6.Mary (never, be)………………………………..to Hanoi. 7.We (know)………………………………each other for 5 years. 8.So far we (learn)……………………………five lessons. 9.We (be)………………………….pen pals for a long time. 10.They (not stay)……………………………….here since last week. 11.Bob (see)………………………this movie before. 12.Sandra (lend)……………………her brother $ 200 so far. 13.Rashid (just pass)……………………….his driving test. 14.Karen (study)……………………Italian for three years now and is still studying. 15.The teacher (already, tell)………………………….to be quiet. giúp mik nhá nhanh: 5 sao + hay nhất + cám ơn chậm: 5 sao + cám ơn