题目内容
—_________does Tom exercise? —Every day.
| A．How often | B．How many | C．How long | D．How far |
A
解析试题分析：句意：汤姆多久锻炼一次？每天都锻炼。提问做某事的频率用how often；how long表示多久，多长时间；how far表示多远；how many表示多少，强调数量；根据下文Every day，可知提问的是频率，
考点：考查疑问词辨析。
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