We must help each other and _____ each other.
| A．learn | B．learn to |
| C．learn from | D．learn with |
The students should _________ when the teachers give the lessons.
| A．take notes | B．take out |
| C．take turns | D．take care of |
There’re enough apples and bananas at home. You _______ buy any fruit.
| A．need to | B．don’t need |
| C．need | D．don’t need to |
The Greens ____________ in China since 2008.
| A．has lived | B．have lived |
| C．lived | D．lives |
I saw a street cleaner __________ the street when I went to school this morning.
| A．clean | B．cleaning |
| C．to clean | D．to cleaning |
Planes are _________ than trains and buses.
| A．more quickly | B．fast | C．quickly | D．faster |