---My bike is broken. May I go ________ yours? ---Sorry, mine __________ broken down.
Everyone in our class __________ to the Great Wall for vacation.
—Why don’t you have a notebook with you ? —I____ it at home this morning.
Stop_________! I have_______ to tell you.
—May I ask you _____ questions about your vacation plans? —Of course.
—How much does it ________ you to buy the bicycle ? —About three yuang.