—Listen! Is Mary singing in the next room?—No. It _______ be Mary.She has gone to Shanghai for an important meeting.
I’m tired now. Let’s stop ________.
A :Is there _______ in today’s newspaper? B: Sorry, nothing.
A: Is the shirt made ______ cotton? B: Yes. It’s made _____ China.
There are over ______ books of all kinds in the library.
I think American English is a little _______ British English.