There is only one ocean. It is divided ... five different parts

1. fill in each gap with a suitable preposition 1. there is only one ocean . It is divided ........... five different parts 2. marine plants and animals fall........... three major groups 3. some of marine plants and animals live on and depend............... the bottom like the starfish 4. there are about 350 species of sharks living ................ oceans over the world 5. for century , people have been challenged by the mysteries that lie ................ the ocean 2. use the right form of the word in brackets to fill in the gaps : 1. many scientists have made efforts to measure the ................. of this ocean . ( DEEP ) 2. some.............. animals have been protected in national parks. ( DANGER ) 3. the rivers in our city are ............. by the chemical pollutants discharged from factories nearby. ( POLLUTION ) 4. With modern technology we have now made important........................ about the biodiversity of marine life. ( DISCOVER ) 5. scientists send submarines to ........... the seabed and bring samples of marine life back to the surface for further study . ( INVESTIGATION ) 6. some of marine plants and animals are ................ animals such as fishes and sharks that move independently of water currents . ( SWIM ) 7. a gulf is a large area of the sea that is partly .................. by land . ( SURROUND ) 8 . biodiversity is a term that refers to the ..................... of different kinds of animals and plants which make a balanced environment . ( EXIST ) 9. these .................... have collected different samples to analyze for their experiment. ( SCIENCE ) 10. what .................... of the earth`s surface is covered by seas and oceans ? ( SCIENCE ) 3. Put the verbs in the correct tense 1. If you drove more carefully , you ( not, have ) ................. so may accidents. 2 . he would get to work on time if he ( get ) ................ up early. 3 . if we ( have ) ..................... more time , I could tell you more about it . 4 . we wouldn`t mind having children if we ( live ) ............... in the country. 5 . If I ( be ) .......................... you , I wouldn`t worry aboout going to university. 6. If they gave me a job . I ( take ) ....................... it. 7. the weather isn`t nice . I ( take ) ....................... a walk if the weather ( be ) ............. nice . 8 . I am very tired tonight . If I ( not , be ) ................. tired , I ( go )............... to the movie with you. 9 . I don`t have enough time . If I ( have ) ...................... enough time , I ( go ) .......................... to the park.