1/ the last time I ..... in Athens, the weather was hot and humid
a. had been b. was c. am d. will have been

2. since i left my hometown, I .... to visit my friends and family several times
a. had returned b. have returned c. returned d. will have returned

1. haft the world's rain forests have already been ....
a/ endangered b. eroded c. found d. destroyed

2/ try to eliminate fatty foods from your diet
a. limit b. get rid of c. move d. add

3. acid rain has caused severe... on the hillside
a. erosion b. pollution c. destruction d. floods

5. this channel allows rainwater to run off
a. keep inside b. move around c. flow into d. flow off

1. B

2. B 

3. D

4. B

5. B

6. D 

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