--- Is this the library? --- ___________.A. No, it is. B. Yes, it is. C. Yes, it isn't.
( ) __________are good friends.
( )—__________is the time? —__________is about seven twenty-five.
( ) Look, that’ s __________apple here. Under__________tree, you can see__________cat.
( )—Excuse me, Jack. Where is the bus? —___________.
( )—What is thirty and twelve? —It’ s ___________.