His pencil is _______ than mine.A、long B、short C、longer
--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 wallA.of;on B.of;in C.of;behind
------I′m hungry。-----Here is some bread ____________you。A.to B.for C.of