1: B

2D

3C

4B

I. Read the passage and choose the best answer to each of the following questions

The environment needs our help. The air is  (1)___________ dirty. The river is  (2)___________  of rubbish. Land is polluted. Humans cannot live without air, water, or food. Each of us must act now. Each of us can help. We can use (3) ___________ energy. We can stop using plastic bags carelessly. We can reuse and recycle things. It is not too  (4)___________  to find new uses for an old thing. It doesn’t (5) __________ much time to sort out garbage. It sounds simple to save the environment. It depends on us!

1. A. too                     B. very                       C. enough                  D. as

2. A. lot                      B. filled                      C. full                         D. has

3. A. less                    B. fewer                     C. more                      D. much

4. A. comfortable     B. easy                       C. difficult                 D. important

5. A. spend                B. take                        C. waste                     D. make

I. Choose the word whose underlined part differs from the other three in pronunciation in each of the following questions.