III. Choose the correct answer a, b, c, or d.

1.   We ______ very busy last week.

      a. was                          b. am                           c. were                         d. will be

2.   The river is heavily polluted. They should ________.

      a. clean it up                b. give it away             c. pick out                   d. recycle it

3.   In 2012, they ______ their project for street children.

      a. start                         b. are starting              c. started                     d. have started

4.   We ______ very early this morning.

      a. will leave                 b. leave                        c. have left                  d. left

5.   Have you ever taken part _______ volunteer work?

      a.for                             b. to                             c. in                             d.with

6.   _______ do you do volunteer work? - Every weekend.

      a. How long                b.How far                    c.How much                d. How often

7. ______ old clothing by donating it to a local charity.

      a. Recycle       b. Reuse                      c. Throw away             d. Pick up

8.   Sometimes I ______ up the streets of my neighborhood for volunteer service.

      a. clean                        b. am cleaning             c. have cleaned            d. will clean