—You should spend as much time as you can_____the piano.
| A．practicing playing | B．practice to play |
| C． practice playing | D． practicing play |
It is a good time ______.
| A．go hiking | B．to go hiking | C．going hiking | D．went hiking |
We usually in the kitchen.
| A．cook | B．cooks | C．cooking | D．to cook |
Why not upstairs and have a look?
| A．goes | B．going | C．go | D．to go |
My mother is talking my teacher.
| A．and | B．with | C．in | D．at |
Look! They soccer the playground.
| A．play; on | B．are playing; in | C．playing; in | D．are playing; on |