当你有事情要打扰某人时,你应说:________A.I'm sorry. B.Excuse me.
( ) An elephant is much _________ than a mouse. A. longer B. bigger C. smaller
( ) I know “cm” is _______.
( )—What school are you in? —I’m in _______.
( )—Do you have a dictionary? —_______
( ) It’s time for _______.