the company had about 20 notbook computers but only one- thi
the company had about 20 notbook computers but only one- third __were______ used regularly.Now we
the company had about 20 notbook computers but only one- third __were______ used regularly.Now we have 60working all day long.为什么用过去时,不是regularly经常吗,我觉得应该是现在是