The traffic accident _________all his life. After that he was limited to a wheelchair.

The fact has worried us more and more students have got near-sighted.

On the top of the hill ______.

.____ you prefer, I’ll give it to you. But we haven’t any other models for you to choose from.

Nowadays, many people walk to work ____CopenhagenConference calling for living a low-carbon lifestyle to cope with globalwarming.