10. The forest also had mountain lions and wolves that kept the deer from______(multiply) too rapidly.

6. ―Given one more week, I'll get      ready.

 —Then we'll have a dinner out to celebrate your success.  

A. anything    B. everything

C. something     D. nothing

9. It still puzzles the science world why some mammals produce their young by________ (lay) eggs and hatching while others by______ (give) birth to young babies.

8. We must prevent the act of cheating________ (create) a fair competition system.

7. The government has to close those small factories to prevent the water of the river from________ (pollute).

5. She's got the job because she has the advantage   others of knowing many languages.

A. over        B. above

C. against     D. beyond

6. He_________ (lay) his gun under the tree where he was_______ (lie).

5. From his_________ (puzzle) look,I knew that the questions were_______ (puzzle).

4. The heavy smoker has decided to cut down smoking, for he knows smoking is ________ (harm) to his health.

3. It has been known that ________ _ (like) other waste found in the ocean, the plastic does not break down.