Варианты ответа к каждому
1-of,from,out
2-a,the, ничего (—)
3-busy, busier, busiest
4- than, when, them
5-has, have, had
6- be, is, are
7-them, they, their
8-run, ran, running
9- much, more, a lot
10-those, that, a

1. of

2. the

3. busiest

4. than

5.has

6. is

7. their

8. run

9. a lot

10. those