Much attention should be paid _________people’s living conditions.
| A．in improving | B．to improve | C．improving | D．to improving |
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T
hey are teachers and don’t realize ________ to start and run a company.
| A．what takes | B．what they take | C．what takes them | D．what it takes |
I ____ him by surprise and he had no time to think of an excuse.
| A．caught | B．seized | C．held | D．took |
I’m sorry to ______ you, but can you tell me how to get to the library?
| A．bother | B．puzzle | C．annoy | D．worry |
Remember that there is still one point ______we must make clear at the conference tomorrow.
| A．where | B．why | C．when | D．that |
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