________is helpful to our environment.
| A．Cutting down trees | B．To protect animals |
| C．Not riding in cars | D．Recycle paper |
______ are in the same class. We’re good friends.
| A．I and he | B．I and him | C．He and I | D．He and me |
______ Greens are on ______ visit to a beautiful city in China.
| A．/ , a | B．A , the | C．The , a | D．The, / |
Mr Green didn’t know ______ last night.
| A．when does his son come back | B．when his son comes back |
| C．when his son come home | D．when his son came home |
The meat smells _______. Maybe it goes _______.
| A．terribly; badly | B．terrible; bad | C．terrible; badly | D．terribly; bad |
There are few students in the park, _________?
| A．are there | B．are they | C．aren’t there | D．aren’t they |