What do you think of a war, Lin Tao—I’ve no idea. But it’s fact that______people had to leave their hometown during the war on Iraq.

Scientistshave many theories about how the universe ___ into being.

The car broke down, and I had to _____on foot [ ]

Shirley, a real book lover, often brings home many books to read _____ the library[ ]

What’s this — .