Mistakes don’t just happen; they occur for a reason. Find out the reason, and then making the mistakebecomes ______.[ ]

The world____the greatest changes in China since China started thereform[ ]

I was so excited last night that it was a long time _____I got to sleep

Who is the student on the playground —- Andy. _____ often takes a walk with______.

Mr. Green has two daughters. _______ is Kate, and _______ is Kathy.