After only two years in this market,our US sales ______ those in Japan.A.have overtaken B.have o
问题描述：
After only two years in this market,our US sales ______ those in Japan.A.have overtaken B.have o
Homework ________ on time will lead to better grades.
A.done B.be done C.having done D.having been done
答
问题补充选A “作业被做完” 如果选B句子就多了个谓语,C和D都是表示“已经怎么样”单独出来的一个句子没有前后文的时候不需要强调已经