1.
1. they are sitting in a cafe now.
2. it is not snowing outdoors now.
3.we are waiting for our teacher in the classroom.
4. i am watching the children playing in the yard
2.
1.an
2.a
3.some
4.any
3.
1.must
2.must
3.mustn't
4.mustn't
Объяснение:
