________ on the top of the hill, you can enjoy a good view.
We were having evening class ____ the light went out.
When I jumped into the river, the water ___very cold.
Since the project has been ___ on well, you must ___ it on until it is completed.
A notice was put ___ on the bulletin board saying that Tom would be put ___ as the candidate for the position of the general manager.
Tom is ___ next year, so he is asking Mr. Smith, a __ _ doctor, who is 80 years old, for some advice on how to spend the retirement life.