As we know, ________ is good exercise and it is necessary for health.
A. walk B. walks C. walking
It was dark I couldn’t see anything.
| A．too; to | B．such; that |
| C．so; that | D．as; as |
We must help each other and _____ each other.
| A．learn | B．learn to |
| C．learn from | D．learn with |
Beijing a lot in the past ten years. Now it has become one of the biggest modern in the world.
| A．changes; cities | B．changed; city |
| C．has changed; cities | D．changed; cities |
“We must keep in the library.” The woman said to me .
| A．quiet; quietly | B．quietly; quietly |
| C．quietly; quiet | D．quiet; quiet |
I will have my hair _____ tomorrow.
| A．cut | B．to cut | C．cutting | D．cuts |