*Choose the best answer (A,B,C or D) to complete each sentence 1. The sea is polluted, which sea plants and animals. A. dangers B. dangerous C. dangerously D. endangers 2. The of the environment is one of the most serious challenges we face. A. destruct B. destruction C. destructive D. destructively 3. The life of sperm whale can be up to seventy years. A. period B. length C. distance D. span 4. Whales feed on krill. A. tiny shellfish B. small fish C. sea plants D. small animals 5. Sperm whale population is at risk due to hunting. A. in extinction B. in danger C. on the decrease D. in fewness 6. “I've got headache. I've had it all day” “Why don't you go to health center? It's open until six.” A. a/ a B. θ / the C. a/ the D. a/ θ 7.She gave me a letter and a post card. letter is from my sister, and ...................postcard is from my brother. A. A/ the B. The/ the C. θ / the D. A/ a 8. rich should help poor and disabled. A. a-a-the B. the-the-the C. a-an-the D. a-an-a 9. Mary is because her job is . A. bore/ boring B. bored/ boring C. boring/ bored D. bored/ boredom 10. “ You look when you see me.” “ Yes. I think you are in China.” A. astonish B. astonishing C. astonishingly D. astonished