VI
1 have you done => did you do
2 Does => has
3 am => have been
4 have you started => did you start
5 know => have known
6 just see => have just seen
7 happens => happened
8 have => bỏ
III
1 is reading
2 comes - takes - has
3 met
4 has written
5 was having
6 was cookung
have you gone=>did you go
does =>has
am=>have been
have you started=>did you start
know=>have known
just see=>have just seen
happens=>happened
have=>x
is reading
comes-takes-has
met
has written
was having
was cooking
IV
1. have you done => did you do
2. does => has
3. am => have been
4. have you started => did you start
5. know => have known
6. just see => have just seen
7. happens => happened
8. have met => met
III
1. is reading
2. comes - takes - has
3. met
4. has written
5. was having
6. was cooking
