1 . 选词填空
1. I am happy ________ (A. to see; B. seeing) you again.
2. His trip to China made a deep ________ on him. (A. impression; B. impress)
3. There is ________ (A. an; B. a) useful robot in the restaurant near my home. It can serve food to customers.
4. She spent too much time ________ television. (A. watching; B. watch)
5. On seeing my terrible behavior, my ________ (A. parents; B. parent) shook their heads.