Exercise 1: Mark the letter A, B, c or D on your answer sheet to indicate the correct answer to each of the following questions

1. Faraday made many                  in the field of physics and chemistry.

A. discover                        B. discoveries                 C. discovered                  D. discovering

2. Faraday was an                  in Davy's laboratory.

A. assistance                     B. assist                          C. assistant                      D. assisted

3. The generator is one of Faraday's most important                  .

A. achievements                B. achievement              C. achieve                        D. achieving

4. His                  of the generator is very famous.

A. invent                           B. inventive                    C. invention                     D. inventor

5. We will                  our English vocabulary if we read English books every day.

A. rich                               B. richness                      C. enrich                          D. richly

6. You study very well. It's                  that you will fail the exam.

A. possible                        B. impossible                  C. possibility                    D. impossibility

7. Lan always shares her                   with me.

A. sadness                         B. sad                             C. sadly                           D. unsad

8. These children have the                  to imitate animals' voice.

A. able                               B. ability                        C. disable                         D. disability

9. Money doesn't bring                  to man.

A. happy                           B. happiness                   C. happily                        D. unhappy

10. Good students aren't                 intelligent students.

A. necessary                      B. necessity                    C. necessarily                   D. unnecessary