—Is it _____in winter in Harbin ______in Nanjing?—Yes, it’s much colder. A.colder, than B.warmer, than C.cold, or
I know _________ mother is a duck. A. they B. their C. them
There _________ a lot of sheep over there. A. is B. isn’t C. are
The bear has four _________. A. baby B. babies C. babys
--- Mary, let’s _________ animals. --- All right. A. make B. makingC. makes
The hens _________ swim. A. can B. can’t C. are