1. 1) Two people are decorating the house.(A)

2) Two girls are wearing Halloween costumes.(C)

3) The little boy is celebrating his sixth birthday. (D)

4) My sister is painting faces for the Halloween party. (F)

5) My friends are chatting to Dracula and Frankenstein's monster! (B)

2. 1) We aren't staying in a hotel.

2) The vampire isn't sleeping.

3) They aren't wearing witches' hats.

4) She isn't celebrating her birthday.

5) I'm not chatting to Dracula.

3. 1) No, i'm not

2) Yes, he is

3) No, they aren't

4) No, she isn't

5) Yes, they are

4. 2) What is he cooking?

3) What is he watching?

4) What is Mandy doing?

5) What are you painting?

6) What are you making?

7) Are they helping?

8) What are they doing?