Ответ:
Task 1
1.know
2.doesn't believe
3.am speaking
4.are sleeping
5.do you want
6.goes
7.understand
8.is talking
9.does she want
10.don't believe
11.are eating
12.walk
Task 2
1.doesn't understand
2.play
3.hates
4.is sleeping
5.remember
6.goes
7.am reading
8.do you know
Task 3
1.are enjoying
2.aren't flying
3.are staying
4.am sitting
5.is eating
Заранее извиняюсь, если что-то неправильно