7.

1. She has been in Vung Tau since January.

2. Ha and Nam have seen this film since 7 o'clock.

3. I have sent her 3 letters since las week.

4. My sister has worked at that hospital for  5 years.

5. I have known her since we were at elememtary school.

6. Nam has become a footballer for 3 years.

7. She's been in London since Monday.

8. Mike has lived in Hanoi for four years.

9. I have written to her since Christmas.

10. We've not seen her since last month.

19. 

loi 2(dong 2 từ trên xuống): we has been in New Zealand=> we have been in New Zealand

loi 3(dòng 2 từ trên xuống): we've also went => we've also gone

loi 4(dong 3 từ trên xuống) : Gina and I => Gina and I have

loi 5(dòng 4): we hasn't gone=> we haven't gone

loi 6(dong 7) : but she have=> but she gas been

loi 7(dong 8): She has visit => she has visited

loi 8(dong 10): she is lived=> she has lived

loi 9(dong cuoi): i think she seen=> i think she has seen

1. She has been in Vung Tau since January.

2. Ha and Nam have seen this film since 7 o'clock.

3. I have sent her 3 letters since last week.

4. My sister has worked at that hospital for  5 years.

5. I have known her since we were at elememtary school.

6. Nam has become a footballer for 3 years.

7. She's been in London since Monday.

8. Mike has lived in Hanoi for four years.

9. I have written to her since Christmas.

10. We've not seen her since last month.

*** 

twice-> second time

has->have

when-> since

visit-> visited

hasn't-> haven't

is->has

has->has been

seen-> has seen