—What____ four and five?—______nine.What____ four and five?______nine.A.are;They are B.is;It'sC.is;IstD.are;It's为什么,说明原因
问题描述:
—What____ four and five?—______nine.
What____ four and five?
______nine.
A.are;They are
B.is;It's
C.is;Ist
D.are;It's
为什么,说明原因
答