An increasing number of people enjoy sun-bathing, but experts warn that too much ________of the body to strong sunlight is harmful．

I have a ______ to talk too much when I’m nervous．

In modern society people have to pass various test for professional          so that they can be qualified for a good job.

The church has______ quite a few changes over the years.

I’m told that you are going to Canada to have a three month further study. Don’t let such a good chance to improve your English _____ through your fingers.