—Is it _____in winter in Harbin ______in Nanjing?—Yes, it’s much colder. A.colder, than B.warmer, than C.cold, or
( ) Let's it. A. do B. doing C. does
( ) May I two books,please? A. has B. do C. have
( ) — is my book? —It's on the desk. A. How B. Where C. What
( ) I know. A. don't B. doesn't C. am
( )—What's this? —It's book. A. a B. an C. the