---May we go home mow ?
--- No, you____. You____ to go home until 5 o’clock.
| A．mustn’t; are allowed |
| B．don’t have to; are supposed |
| C．needn’t; aren’t allowed |
| D．can’t; aren't supposed |
He _____in Xinxiang for five years when I heard his news.
| A．has lived | B．had lived |
| C．is living | D．has been lived |
We all should make a contribution to ______ our environment.
| A．protects | B．to protect |
| C．protecting | D．protect |
Neither my classmates nor my teacher_____ chess better than me.
| A．play | B．plays |
| C．playing | D．played |
_____ the development of the country, most people are living happily.
| A．On | B．With | C．In | D．For |