The art club is for members only. You can’t go in ____ you are a member.

It’s cold in here. We must have the fire　　　　day and night.

The world’s population is getting larger and larger,so scientists are trying to ______ new ways to solve the food shortage.

Does your uncle still smoke?— He given it up. It’s two years ever since he _____. [ ]

Darling, what’s up —–Could you think of a way to make Tony _____