Firefighters warned that the change in the weather might ________ new fires.

The man got to New York in 1998,_______ some time later, he became a famous computer engineer.

Come and join us, Betty!— I’m afraid I can’t. I’m too busy now. If I ______ time, I would certainly go.

Scientists have come to the conclusion ___________ the temperature on Earth is getting higher and higher.

You don’t have to take a raincoat. It isn’t going to rain.—Well, I am not sure. It ______ do.