―Isn’t it hard to drive downtown to work?
—Yes, that’s why I ________ to work by train.
| A．have been going | B．have gone |
| C．was going | D．will have gone |
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 |
Whenever I met her，__________ was fairly often, she greeted me with a sweet smile.
| A．who | B．which |
| C．when | D．that |