——Did Lily use to be short?
——________ , but he is tall now．
| A．No, she did． | B．No, she didn’t． |
| C．Yes, she did． | D．Yes, she do． |
—__________ do I have to change the robot’s batteries? —Every two months.
| A．How long | B．How soon | C．How often | D．How many |
Mr Chen __________ his mobile phone to the shop because it can’t work at all.
| A．need to return | B．needs return | C．need returning | D．needs to return |
Computers have made a great difference _______ our everyday life.
| A．with | B．of | C．to | D．for |
After half a day’s hard work, we made our classroom look as _______ as new.
| A．well | B．better | C．best | D．good |
_______ provides many hours of air for astronauts in space.
| A．An air tank | B．A power pack | C．A helmet | D．A space sleeping bag |