Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage Have a walk (1) ________ a beach, listen to the sound of the sea waves, and suddenly you see a lot of rubbish on the beach. Pollution takes away all the (2) ________ of our beaches. I feel really annoyed (3) ________ I see plastic bags lying on the sand, cigarette ends buried in the sand, and soda cans floating in the sea. There are a lot of things that we can do. (4) ________ we see rubbish, we should do our part in the protecting the land (5) ________ picking it up and throwing it in dust bins. (6) ________, we can form some kinds of organization that helps (7) ________ the beaches. If everyone does their part, the beaches will be a wonderful and beautiful place. We need to start now (8) ________ the beaches are damaged beyond repair. 1. A, at B, in C, on D, over 2. A, beauty B, beautiful C, beautifully D, being beautiful 3. A, before B, after C, when D, while 4. A, While B, If C, Unless D, Soon 5. A, by B, with C, of D, in 6. A, Nevertheless B,Therefore C, However D, Moreover 7. A, cleaning up B, clean up C, cleaning off D,clean off 8. A, before B, after C, until D, when