题文
We’re conducting a nationwide survey of people’s reading habits. Would you have five minutes ________ a few questions?
| A．answering | B．to answer |
| C．to have answered | D．having answered |
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We’re conducting a nationwide survey of people’s reading habits. Would you have five minutes ________ a few questions?
| A．answering | B．to answer |
| C．to have answered | D．having answered |
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