—Where is he exactly?
—I don’t know, but I saw him _______ an experiment in the lab when I passed by.
| A．to conduct | B．conducted |
| C．conducting | D．conduct |
The houses for the low-income families _______ at present in our city will be completed next year.
| A．to be built | B．built |
| C．being built | D．having been built |
He spared no efforts to make himself _______ but failed.
| A．understand | B．understanding | C．understood | D．to understand |
There are about 85% of adults _______ the idea of a ban on smoking.
| A．welcome | B．to welcome |
| C．welcomed | D．welcoming |
_______ your work on time, otherwise you will be in trouble.
| A．To finish | B．Finishing |
| C．Finish | D．Finished |
It shames me to say it, but I told a lie when ______ by my head teacher why I was late for school.
| A．questioning | B．having questioned |
| C．questioned | D．to be questioned |
Children are not born with their habits already _______.
| A．to make | B．to be made | C．making | D．Made |
Successful people make a plan to deal with each new problem rather than denying or ______ that it exists.
| A．realizing | B．praying | C．judging | D．ignoring |
The use of several senses gives the brain more connections and associations, making it easier ______ information later, which assists memory and learning.
| A．find | B．finding | C．found | D．to find |
I have learned a lot about Asian customs, ______ in the small village for three years in the early 1990s.
| A．lived | B．to live |
| C．having lived | D．to have lived |
If you want to get your ability ______, you have to show it in your work rather than complain all day.
| A．to recognize | B．recognizing |
| C．being recognized | D．recognized |
一Can I have the document right now?
一Of course．Wait a minute and I ’ll have my secretary it for you.
| A．to print | B．printing |
| C．printed | D．print |
It happens that I am quite familiar with the professor _______ to give us a speech on environmental protection next Monday.
| A．inviting | B．to be invited |
| C．being invited | D．having invited |
The pipes have oil or water inside them, which is heated and sent to the storage tank until ______ to produce electricity.
| A．needed | B．needing |
| C．to need | D．having needed |
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