As population increases, （ ）.

He studies so hard to avoid （ ） at the bottom of the class.

The defense computers calculate way to （ ） the enemy missiles.

—Shall we invite Tim? —No， it’s too late to invite any more people. _____， he hates parties， you know.

It was not known （ ） he had said during the interview.

Air pollution is obviously one of the major _____ of city life.

The twin sisters look so much alike that I could never tell _____.

The price of fish is （ ） during the Spring Festival.

（ ） comes back first is supposed to win the prize.

—Do you like the material? —Yes, it （ ） very soft.

He is the sort of businessman who would do anything in his （ ） of profit.

By the end of this term, we （ ） 3000 English words in all.