eng tense question

1) Some birds ___fly___ (fly) from north to south in winter.
2) Mr. So leaves his home as soon as he ___has answered____ (answer) the phone.
3) It's noisy next door.What ____'s happen____ (happen) ?
4) When Dick___was finishing___ ( finish) school, he went home at once.
5) The pupils ____did not stop____ (not stop) writing for the whole lesson.
6) I ____will wait____ (wait) here until the rain stops.
7) He ____will not leave____ ( not leave) until we give him some food.

1) fly
2) has answered
3) is happening
4) had finished
5) did not stop
6) shall wait
7) will not leave

1) Some birds (fly) from north to south in winter.
2) Mr. So leaves his home as soon as he (have answered) the phone.
3) It's noisy next door.What (is happening) ?
4) When Dick ( have finished ) school, he went home at once.
5) The pupils (have not stopped ) writing for the whole lesson.
6) I ( shall wait) here until the rain stops.
7) He ( will not leave) until we give him some food.