How much are these shoes? _________ twenty dollars.
| A．It’s | B．There are |
| C．They’re | D．Their is |
So far _____ people have visited the old city in Zhejiang.
| A．million of | B．ten millions of |
| C．ten millions | D．millions of |
---Have you ever _____ the Great Wall? ---Yes, I have.
| A．see | B．saw | C．seen | D．seeing |
---_____ riding your bike to the park? ---Good idea.
| A．How about | B．Why not |
| C．Why don’t you | D．You should |
Liu Sanzi is _____ eight-year-old boy from village.
| A．a | B．an | C．the | D．/ |
—Could you post the letter for me?
—_______________
| A．That’s all. | B．Yes, I could. |
| C．That’s right. | D．No problem. |