III. Choose the underlined word or phrase, A, B, C or D that needs correcting.

1. Having leisure activities are truly important to the elderly.

       a                                  b                          c            d

2. Collecting coins is exciting, but it can also be relaxed.

                a                b      c                                     d

3. When you game online, be carefully when making friends with strangers.

                      a                          b                     c                   d

4. Countryside is not polluted, because you can breathe fresh air there.

                       a                         b                             c                   d

5.     I want to visit the Vietnam Museum of Ethnology to learn for 54 ethnic minority groups.

                a                                          b                       c     d