While I _____________, someone ___________at the door.
| A．did my homework; knocked |
| B．do my homework; knocks |
| C．was doing my homework; knocked |
| D．was doing my homework; knocks |
—Why are you so tired these days?
—Well, I have ________ homework to do.
| A．too much | B．too many | C．much too | D．many too |
___his surprise, she succeeded in climbing up the high mountain.
| A．At | B．To | C．In | D．On |
What’s_________ with you?
| A．trouble | B．the matter | C．the wrong | D．Matter |
My grandparents are very healthy. They always ______ after school.
| A．brush tooth | B．take a shower |
| C．clean the room | D．take a walk |
We have an art class ______ Wednesday afternoon.
| A．in | B．on | C．of | D．at |