Avatar is an interesting film. I ______ it twice already.
A. see B. saw C. have seen D. will see
— What are the kids doing?
— They ______ flowers in the garden.
A. water B. watered C. have watered D. are watering
She ______ to her feet and ran out of the room just now.
A. jumped B. jumps C. was jumping D. will jump
Ask John ______ here at 7 pm tomorrow.
A. come B. coming C. came D. to come
The air in Beijing is getting much ______ now than a few years ago.
A. clean B. cleaner C. cleanest D. the cleanest
He has two pets. One is a dog, ______ is a cat.
A. the other B. other C. others D. another
