---Are the keys in the door ? ---Yes, __________.A. they aren't B .it isn't C. they are
( ) There are ________ months with _______ days in a year.
( )—Do you have ________ shells? —Yes, I have ________.
( ) The Great Wall is about 2,000 years_______.
( ) You’ll be late ________ you don’t hurry.
( ) Listen to ________ music of the film.