My colleagues and I have completely different ideas about when to ________ to the next item on the agenda.
| A．proceed | B．convert | C．jump | D．recommend |
Ted came for the weekend wearing only a T-shirt and shorts，__________ is a stupid thing to do in such weather.
| A．this | B．that |
| C．what | D．which |
The children，__________ had played the whole day long, were worn out.
| A．all of what | B．all of which |
| C．all of them | D．all of whom |
We have launched another man-made satellite，__________ is announced in today's newspaper.
| A．that | B．which |
| C．who | D．what |
There is no simple answer，__________ is often the case in science.
| A．as | B．that |
| C．when | D．where |
He may win the competition，__________ he is likely to get into the national team.
| A．in which case | B．in that case |
| C．in what case | D．in whose case |