---I want to buy the book Harry Potter. Do you know its _______?
--- Not very well. Maybe fifty yuan.
| A．cover | B．size | C．color | D．price |
Today，computers are really helpful．They________everywhere．
| A．use |
| B．are used |
| C．used |
| D．were used |
A year has four seasons and it________twelve different star signs．
| A．divided into |
| B．is dividing into |
| C．dividing into |
| D．is divided into |
Battery-operated slippers are used________seeing in the dark．
| A．to |
| B．as |
| C．by |
| D．for |
The children________not to play with fire．
| A．are told |
| B．tell |
| C．asking |
| D．ask |
The Northern Tower of Xin Hua has a long history．It________in 1835．
A．is built
B．was built
C．was building