--- Can you tell me where Tom is? --- He ________ on the playground.A. plays B. playing C. is playing
---Listen! Kate is singing in the classroom.----It_____be Kate. She has gone to the Library.
The songs of Coco sound________. Her CDs sell_______.
Bob has made a lot of promises, but______of them have been carried out.
Many did all ______she could to get on well_______her classmates.
She hates people_______don;t help others when they have trouble.