---Boys, don’t swim in the Fengcheng River!---Why not? Isn’t it deep enough _____?
—How much did you ____ buying the new bike? —Three hundred yuan.
— The man in the red car __________ his father. — Yes. I think so.
Insects __________ plants.
He is the tallest __________ the three.
— Our teacher told us that these exercises were __________. — Really?