Many young people want to work for a humanitarian organization, ________?

It’s necessary for students to listen to their teacher ________.

Being well-dressed and punctual can help you create a good ________ on your interviewer

________ more carefully, he would not have had the accident yesterday.

Before cars ________, people ________ horses and bicycles.

Mark the letter A, B, C, D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:

If you think carefully before making your decision, you will avoid to get into trouble later

Mark the letter A, B, C or D on your answer sheet to indicate the best answerof each following questions.

Mr Pike is repairing the refrigerator in the kitchen at the moment

I’m going ________ for a few days so don’t send me any more work.