There are many valuable services which the public are willing to pay ___, but which __ not bring a return in money to the community.
| A．to; do | B．不填；does | C．for; does | D．for; do |
It’s impossible for him to escape ________ this time; he made such a big mistake.
| A．to punish | B．punishing |
C．being punished | D．having punished |
_________ the exercises, we went on to learn the new words in the next unit.
| A．Finished | B．To finish |
C．Having finished | D．Finishing |
—________ You look very depressed. —I failed the driving test again.
| A．So what? | B．Take your time. |
C．What’s up? | D．Not to worry. |
What depressed her was that although she kept waving her hand, nobody seemed _______ her new watch.
| A．noticing | B．to have been noticed |
| C．to have noticed | D．having noticed |
______ which school was suitable for their son, the parents visited lots of different primary schools in the city.
| A．Finding | B．Being found |
C．Found | D．To find |