С 1-4 задания.(1,2,3,4)
1 задание.
1. has started.
2. have decided
3. has phoned
4. have cycled
5. have studied
6. has cooked
7. has landed.
2 задание.
1. know-knew-known
2. write-wrote-written
3. sleep-slept-slept
4. sell-sold-sold
5. think-thought-thought
3 задание
1. have seen
2. has gone.
3. have left.
4. has won.
5. have eatten.
6. have done.
7. has broken.
4 задание
2. it has stopped
3. have arrived.
4. have had.
5. have spoken.
6. has finished
7. have missed.
8. have eaten.