While prices are rising so fast, many people are working out ways to____ down their expenses.[ ]

____ 1960s, ________ number ofhabitants here is very _______ ,and it was since the middle of 1970s that thepopulation has been increasing rapidly.

____ others might have been satisfied, Dawson had higher ambitions.

In many places, a lot of hunters kill wild animals for their fur, bones and other parts of the body.—

-Tom, it is your turn to give us anEnglish lecture—I told one yesterday