Ответ:

1.

a. Do the campers sleep in the tree houses?

b. Where the campers sleep?

2.

a. Are they vegeterians?

b. Why they vegeterians?

3.

a. is he making a fire at home?

b. What is he making at home?

4.

a. is it getting cold at night?

b. When is it getting cold?

5.

a. Has the tent got a big sleeping area?

b. What has the tent got?

11.

1. What somebody brought in the kitchen?

2. Who was cleaning the floor?

3. What somebody cooked for us in the morning?

4. what somebody found yesterday?

5. what has halped him?