Mr Smith is at the door. _______ wants to see you.
| A．He | B．It |
| C．This | D．That |
As a result of the serious flood, two-thirds of the buildings in the area __________.
| A．need repairing | B．needs to repair |
| C．needs repairing | D．need to repair |
The country has already sent up three unmanned spacecraft, the most recent __________ at the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
At the beginning of class, the noise of desks __________ could be heard outside the classroom.
| A．opened and closed | B．to be opened and closed |
| C．being opened and closed | D．to open and close |
I smell something __________ in the kitchen. Can I call you back in a minute?
| A．burning | B．burnt |
| C．being burnt | D．to be burnt |
As the light turned green, I stood for a moment, not ___, and asked myself what I was going to do.
| A．moved | B．moving |
| C．to move | D．being moved |