As population increases, （ ）.

John Smith, a diligent student, never refuses to （ ） more responsibilities that are assigned to him.

It is very expensive to （ ） the fashion.

Only when （ ） in the afternoon （ ） able to leave.

It （ ） that the jewels had been stolen by a traveler.

I advise them to withdraw （ ）.

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

Three of us will go there, and the rest （ ） to stay here.

I recognized John （ ） he entered the room.

The Vice Chairman of the conference is （ ） inviting the VIPs.

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

It is by no means clear （ ） the president can do to end the strike.