一Can you finish these books before 10 o’clock?一Yes, I can.[ ]

The weather ________ be very cold at times, though it’s usually warm in spring in my home-town.

What will the weather be like tomorrow? –It____ be rainy, cloudy or sunny. Who knows?

The camel comes ______ Africa and it lives ______ the desert. [ ]

______stopping polluting the earth______hope to live in a better environment．