问题
选择题
Tom _ _ his room every day. He it now.
A．cleans, clean
B．cleans, cleaning
C．cleans, is cleaning
D．clean, is cleaning
答案
答案：C
国家every day 表示一般现在时，而后一句的时间状语为now ，表示现在的意思，故选使用现在进行时，故选C
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