用所给词的适当形式填空

Question

1. listen ! a girl ____ ( sing ) in the hall .
2. alison ____ ( swim ) for three hours
3. when i entered the classroom . i found some students _____ ( water ) TV
4. there are some children who ____ ( play ) football on the playground .
5. ——how long ___ you ____ ( do ) that ?
——for about four years .
6. the young man ____ ( skare ) since he was eight years old
7. he'd like _____ ( collect ) shells because they are beautiful
8. when i was twelve , i ____ ( start ) to play tennis .
9. if you know his telephone number . please let me ______- ( know )
10. thank you for ____ ( tell ) me the truth .

Answer 1

1. listen ! a girl _is singing___ ( sing ) in the hall .
2. alison _has been swimming___ ( swim ) for three hours
3. when i entered the classroom . i found some students _watching__TV
4. there are some children who __playing__ ( play ) football on the playground .
5. ——how long _have__ you __been doing__ ( do ) that ?
——for about four years .
6. the young man ___has been _ ( skare ) since he was eight years old 这题你打错了，改正好追问我
7. he'd like __to collect___ ( collect ) shells because they are beautiful
8. when i was twelve , i __started__ ( start ) to play tennis .
9. if you know his telephone number . please let me ___know___- ( know )
10. thank you for __telling__ ( tell ) me the truth .追问

the young man ____ ( skate ) since he was eight years old

追答

has been skating

Answer 2

1.is singing 2.has swam 3.watching 4.playing
5.have done 6.has skared 7.to collect 8.started
9.know 10.telling