— How many are there in the USA?
— There are fifty.
| A．countries | B．villages | C．towns | D．states |
We _________wait until the traffic light turns green when we cross the road.
| A．must | B．can | C．need | D．may |
During the May Day holiday, we stayed in a mountain village with ______trees around.
| A．thousand of | B．thousand |
| C．thousands | D．thousands of |
Steven, go to bed now. You should________before six tomorrow, or you will miss the plane.
| A．get off | B．get up |
| C．get on | D．get along |
---Hi, Jack. Is this your new bike? ---No, _________is over there. It’s a present from my uncle.
| A．Mine | B．Yours | C．Hers | D．His |
My PE teacher often teaches us how to play ________football.
| A．a | B．an | C．/ | D．the |