I was surfing the Internet my brother was doing his homework.
| A．after | B．because | C．while | D．When |
We teachers should ______ students ______ us questions in class.
| A．be allowed, to ask | B．let, to ask | C．encourage, to ask | D．allow, ask |
— I have trouble ______ my new computer.
— Don’t worry. I will show you ______.
| A．to use, how to use | B．to use, what to use | C．using, what to use it | D．using, how to use it |
It’s dark. I would rather ______in bed than ______a walk outside.
| A．lie, take | B．to lie, to take | C．lie, taking | D．to lie, taking |
My dream is to be a singer one day and I will do what I can do __________ my dream .
| A．to come true | B．come true | C．achieve | D．to achieve |
— Why do you think ______?
— He could ______ for exercise.
| A．is the man running, run | B．the man is running, be running |
| C．does the man run, run | D．the man runs, be running |