—Do you know that China is one of_________countries in the world?
—Yes, I do. It’s much________than the U.S
| A．oldest; older | B．the oldest; older |
| C．the oldest; elder | D．the older; elder |
---It’s difficult to get to the other side of the river．
---I think a bridge ________ over the river．
| A．should build | B．should be built |
| C．will build | D．has been built |
--- My sister is still afraid of the dark, _____she is already 15 years old.
| A．even though | B．or | C．so | D．but |
---I can’t understand many new words.
---You should in a dictionary.
| A．look up it | B．look them up |
| C．look up them | D．look it up |
----Don’t eat too much. You’re too fat.
----Yes. I have ______ 7 pounds now.
| A．put up | B．put down |
| C．put out | D．put on |
______ cold day! I must put on more clothes.
| A．How a | B．What |
| C．What a | D．How |