问题

_______ a pair of compasses, it is easy to describe a circle.

A:Having
B:To have had
C:If you have
D:if having

正确答案是：

同类题型

What a nice watch it is! — It’s my birthday present. It in America.

______ he comes back, I’ll tell him about it.

．— Where did he leave his car key? — It was in the lab he made the experiment.

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u, the young heroine of thenew Zhang Yimou movie Under the Hawthorn Tree, is a very innocent high schoolstudent, ______ love story set in ______ mid 1970s