In1994, China began collecting income tax from citizens earning more than 800 Yuan per month but only 1% people were earning more than _______; now about 60% earn the amount.
-- How was your trip to London ? -- Great. I was helped by an organization. Otherwise, I _____ it.
There is no greater pleasure than running on the playground, ____ after a ball.
I have told you the truth. ______ I keep repeating it?
Their relationship_______ ups and downs over the past century.
________carefully if any change occurs when doing experiments in the lab.