--How many do you need to make fruit salad?--Two should be enough.
—Eric, no talking in class!—Sorry, I _______ next time.
The man sat ________ the bus, because he is the driver.
You can________ the football ________ me, but you mustn’t________ it________ others.
There are many trees on ________ sides of the road.
He didn’t work ________ the other students in his class, so he got the worst report card for the end-of-year exams.