The air in Taizhou is getting much ________ now than a few years ago.
| A．clean | B．cleaner |
| C．cleanest | D．the cleanest |
At last, Peter made the baby ___ and begin to laugh.
| A．stop to cry | B．stop crying | C．to stop to cry | D．to stop crying |
When I got there ,I saw some boys _____ on the playground.
| A．playing | B．played | C．to play | D．was waiting |
Some scientists think that it may take ______years to make robots look like people, and do the same things as us.
| A．hundreds of | B．two hundreds of |
| C．two hundreds | D．two hundred of |
There ________ a basket ball match this afternoon.
| A．will be | B．will have | C．are going to be | D．is going to have |
What did your son say in the letter?
He told me that he _____ the Great Wall the next day.
| A．will visit | B．has visited | C．is going to visit | D．would visit |