12.　 –Where is your mum? –Oh, she _________ ____________(cook) for us in the kitchen.

11.　 Look! Our daughter __________ ______________ (washing) clothes for us.

10.　 At the moment, in different places of the world, people ______ ________(do) different things.

9.　　 She _________ ___________ (write) a letter.

8.　　 The woman _______ _________ (sit) there.

7.　　 Lingling _________ _________ (take) a photo of Daming and Tony.

6.　　 Betty _______ ________(carry) a bag.

5.　　 Betty _______ ________(look) at postcards.

4.　　 Tony _______ ________(walk) behind Daming.

3.　　 Tony ______ _______ (talk) on his cell phone.