I have to _____ for the math test. [ ]
A. study
B. studying
C. learning
D. studied
答案:A
— Are you Dick?
— Yes, _____. [ ]
A. I am
B. you are
C. I'm
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是()
A.①③⑥,②④⑤
B.①③⑤,②④⑥
C.①③④,②⑤⑥
D.①⑤⑥,②③④