11The public has complained that large quantities of waste water ______ into rivers without being cleaned, so large amounts of money ______ to solve the problem

Did you hand in your application for a league member?— Not yet. If I _____ to see my father, I would have. [ ]

Let’s hurry to _____ that bus or we’ll be late for school.

The two birds _________ each other in shape and color. In other words, they _________ each other in shape and color.

He_____ articles for our wall-newspaper these years,and he____ about thirty articles.