Răspuns:
6]
1.don't have to
2.must
3.don't have to
4.shouldn't
5.mustn't
7]
1.was snowing
2.were watching
3.heard
4.went
5.were going
6.jumped
8]
1.since
2.have done
3.have started
4.have (you) tried
5.for
9]
1.children in the..
2.a summer..
3.an activity...
4.The children...
5.a great time...
Explicație: