He is believed____________ in at his office on his way home.
| A．dropping | B．to have dropped |
| C．having dropped | D．to be dropped |
Willie has complained to the sales manager about the PC he bought _____ screen exploded for no reason.
| A．which | B．where | C．whose | D．when |
There is a saying that"Never put off until tomorrow what you can do today."
| A．will go | B．has gone | C．is going | D．goes |
The growing interest in ____ history is clearly evident in ____ number of people visiting museums and country houses.
| A．不填；不填 | B．不填；the | C．the; the | D．the; 不填 |
Welcome to the World Expo, which will take place in Shanghai May 1
October 31.
| A．during; on | B．from; to | C．between; of | D．on; till |
Both students and parents appreciate the great importance schools have to eyesight protection.
| A．reacted | B．attended | C．attached | D．adapted |