---- do the students exercise a week? ---- Once or twice.
A. How long B. How often C. How many times
The railway______ Qinghai to Tibet is the longest plateau (高原) railway in the world.
| A．connected | B．connects |
| C．connecting | D．is connected |
_____ of the twins has been there before.
| A．Both | B．Neither | C．All | D．None |
You can _______the cake _______ten pieces.
| A．divide, into | B．be divided , into |
| C．divided, into | D．be divide, into |
Tom is in a bad mood. Let’s .
| A．cheer up him | B．cheer him up |
| C．calm him down | D．calm down him |
This photo reminds me the days when I worked the farm with my friends.
| A．about, in | B．about, on |
| C．of, in | D．of, on |