How big are your____?A.foot B.feet C.foots
--What are you doing? ---- I am _____ a letter. A.sending B. writing C.Both A and B
What is ____ envelope? A. a B.an C ./
We put the address on _____ right. A.a B.an C.the
There is a map________China ________the wall A.of;on B.of;in C.of;behind
------I′m hungry。 -----Here is some bread ____________you。 A.to B.for C.of