“This is ____ his backpack."A.notB.noC.not aD.A and B
问题描述：
“This is ____ his backpack."
A.not
B.no
C.not a
D.A and B
答
A 这不是他的背包
答
A
答
一定是A
答
A.not
答
is 后面的否定词必须是not 所以是A,
答
A 啦！