问题
选择题
It’s 8 o’clock. My mother is reading a book. My sister and I _____.
A.is doing my homework
B.am doing my homework
C.is doing our homework
D.are doing our homework
答案
答案:D
题目分析:句意:现在八点了,我妈妈正在读书,我和妹妹在做作业。my sisterand I 是两个人,be 动词用are,do one’s homework中的one’s根据主语进行变化,故选D。