The number of the workers in this factory ________1,500. A number of them ______ from the countryside.
| A．is; are | B．are; is | C． is; is | D．are; are |
The driver was very happy that his car ______ very well in this car-washing centre.
| A．cleans | B．cleaned | C．was cleaned | D．is cleaned |
— I didn’t know you were friends with Mr. Smith.
— We ______ each other for6 years.
| A．knew | B．are known | C．have known | D．will know |
When I was a boy, I often ______ to play in that park.
| A．went | B．have gone | C．go | D．will go |
— ______ do you go to the gym?
— Once a week.
| A．How far | B．How often | C．How long | D．How soon |
Nowadays it’s very useful ______ a foreign language.
| A．learn | B．learned | C．to learn | D．learns |