____Switzerland (瑞士) is very small , _____it is the land of watch and it is very rich.

Scientists have made a major ________ in the treatment of cancer.

The plane is due to take off at 8:00 from theairport.— ______ we can’t get there in time— Try to take another flight then.

Having now __ 40, he feels that his football career is coming to an end.

If I _______ it, I would do it in a different way.