Match the words in column A with the definitions in column B. There is one extra definition. (2)

            A                                                                                 B

1. concentrate             (…..)                                      a. state of being worried

2. nervousness          (…..)                                      b. a look on the face

3. involve              (…..)                              c. give all your attention to sth

4. expression              (…..)                 d. move something or somebody up       

                                                                 e. make somebody take part in sth