Wouldn’t it be ____ wonderful world if all nationslived in ____ peace with one another

Mary is hard-working. She works harder than classmates in her class.

She can dance．I can dance．

Who’s that boy—He is my cousin, and _______ name is Jack.

Look! The window is brokenSomeone broke it _____ purpose— That may be rightBut perhaps it was broken _____ accident[ ]