—Do you know the boy _______ is talking to Mr. Smith?
—Yes, he's my brother.
A. what B. which C. Who
---How soon will you finish your college?
---________.
| A．After a year | B．In a year | C．Before a year | D．A year before |
Toby ______ talk ______ and does ______. Then he can be a good boy.
| A．is, little, many | B．will, less, more |
| C．is going to be, more, less | D．will, more, less |
When you lose your way in the city, you can _________ the policemen _________help.
| A．look; for | B．find; out | C．tell; to | D．ask; for |
She looks very sad. I want to help her, but I just don’t know ____ to do it.
| A．what | B．when | C．how | D．which |
--How will students study in the future?
--- ____home______ computers.
| A．In；in | B．At；in | C．At；with | D．At：on |