—Do you know Neil Armstrong?
—Yes. He is the first man on the moon.
A. to walk B. walks C. walked
The little boy sing in his room last night.
| A．heard to | B．is heard to |
| C．was heard | D．was heard to |
Teresa is nervous she can’t talk in front of the class.
| A．such, that | B．too, to |
| C．so, that | D．to solving |
— do you tell him about the news?
—By an e-mail.
| A．How, sending | B．How, send |
| C．What, sending | D．What, send |
I used to to school by bike, but now I am used to to school.
| A．go, walking | B．go, walk |
| C．going, walking | D．going, walk |
There are some dangerous fishes in this river, and I’ve warned Jack here.
| A．not to swim | B．to not swim |
| C．swim not to | D．to swim not |