The production of the factory has grown to _____ in 1999.
| A．twice as it was | B．twice what it was | C．as twice as it was | D．twice that it was |
If you can’t _____ a better plan, we have to carry out the present one.
| A．on purpose | B．join in |
| C．go through | D．come up with |
I’d like to know _____ Chinese.
| A．when he began to learn |
| B．when did he begin to learn |
| C．when did he begin learning |
| D．for how long he began learning |
Rather than ______ his own car work, he preferred ______ public transport.
| A．to drive ; to take | B．driving ; taking |
| C．drive ; to take | D．drive ; taking |
The terrible shaking of the building woke up all the people _______ were asleep.
| A．who | B．whose | C．which | D．whom |
You should always exercise, ______ it’s only ten minutes every day.
| A．as if | B．even if |
| C．unless | D．while |