—Let’s go _________.
—Great! I’d like to relax myself in the water.
A. skating B. swimming C. climbing
My parents like the music ____ is quiet and gentle.
| A．who | B．that | C．whose | D．those |
We often see Betty ____ the old man with his housework.
| A．help | B．to help | C．helped | D．helping |
In our city, _____ middle school students want to work as a teacher in the future.
| A．thousand | B．thousand of |
| C．thousands of | D．two thousands of |
I found _____ necessary to save energy and protect the environment.
| A．that | B．this | C．it | D．one |
________ beautiful these postcards are! Where did you get them?
| A．What a | B．How a | C．How | D．What |