题文
Taking physical exercise regularly is an effective way to avoid __________ with the flu.
| A．to infect |
| B．infecting |
| C．to be infected |
| D．being infected |
推荐试卷
Taking physical exercise regularly is an effective way to avoid __________ with the flu.
| A．to infect |
| B．infecting |
| C．to be infected |
| D．being infected |
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