I have ().A.a pair of .sock B.pair of

问题描述:

I have ().A.a pair of .sock B.pair of
I have ().
A.a pair of .sock
B.pair of socks
C.two pair of socks
D.two pairs of socks

D,两双袜子.two pairs of socks
一双袜子应该是a pair of .socks