He knows it is high time that he ________ at once.A．quits smokingB．quitted smoki
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He knows it is high time that he ________ at once.| A．quits smoking | B．quitted smoking | | C．should quit to smoke | D．quitted to smoke |
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答案
| B |
解析
| 本题考查虚拟语气及动词用法。it is high time that + 主语 + 过去时态/should + v原形；quit doing 放弃做。故选B。 |
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