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51.

If you want to do a lot of progress, you need to try harder.

52.

Some people often say that using cars is not so convenient than using motorbikes.

53.

Dr. Harder, that is the professor for this class, will be absent this week because of illness.

54.

Because the student spent too many time surfing the Internet, he didn't study well.

55.

Many people object to use physical punishment in dealing with discipline problems at school.

56.

The effects of cigarette smoking has been proven to be extremely harmful.

57.

I try hardly but I can never catch up with him because he is so smart.

58.

Labor Day is always celebrated on first Monday in September.

59.

Japan is the country where occurs the most earthquakes in the world.

60.

My father asked my elder brother to give off smoking because of his health.
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