There are six floors ______our school building. Our class is ______ the third floor.
--I can' t find Mike. Could you tell me ?--He is in the library. A. what he is B. how he is C. where he is
This T-shirt is not large enough. Please show me a one, A. large B. larger C. largest
Please keep quiet, everybody! I have important to tell you. A. nothing B. something C. everything
Some scientists think that it will take __ of years to make robots do most work for humans. A. hundreds B. hundred C. thousand
My cousin knows a lot about geography, __ he is only four years old. A. because B. so C. although