Ответ:

1. 1) shining

2) throwing

3) making

4) swimming

5) playing

6) listening

7) going

8) reading

9) watching

10) wearing

2. 2) a. They aren't wearing heavy jackets.

b. Are they wearing heavy jackets?

3) a. You aren't making a sandcastle.

b. Are you making a sandcastle?

4) a. She isn't decorating the Christmas tree.

b. Is she decorating the Christmas tree?

5) a. It isn't raining today.

b. Is it raining today?

6) a. I'm not going on a picnic.

b. Am I going on a picnic? (либо Are you going on a picnic?).

Объяснение:

В последнем b первый вопрос получается немного странным (ты сам себе вопрос задаешь), поэтому, я думаю, второй вариант (с you) подойдёт лучше.