—Lily, _____ you _____ your ticket?—Not yet!
Mr.Smith,a famous scientist,________that park next Thursday.
Mark works hard now,and he does his work________than before.
We all want to know who can________the physics problem?You know,it’s very difficult.
They are going to London next month.They are________visiting the Buckingham Palace.
You always________a mess.I can’t stand you any longer.