1.What are busy _____these days?

问题描述:

1.What are busy _____these days?
A.do B.doing C.to do D.done
下面图形有几个内错角?
/\
---------
/ \
/____\
就是一个三角形中间画一条直线
/\
- /--\-
/----\

1.B
2.6对