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2 CHECK. Write the missing words to make true sentences according to the web page.

1. Scuba equipment allows divers to stay underwater for ______________ periods of time.

2. Not all scuba divers are great

3. It’s very important for a scuba diver to be

4. A diver should avoid coming to the surface of the water very

5. Springtime in Bali is good for scuba diving because there won't be a lot of

DISCOVER. Complete the exercises to learn about the grammar in this lesson.

A_ Use information from the web page in exercise 1 to complete these sentences about SCUBA.

1. SCUBA refers to the equipment that divers ——_ swear.

2. They often CSS hd thee breath.

3. You —____sibee heealthy.

4. You CSCS ome to the surface too quickly.

5. Bali__.______.______great.

B_ The words you wrote in exercise A change the meaning of the main verbs. Match the words
with their meanings.

____ 1. have to a. prohibition
_____2. be supposed to b. expectation

__ 3. must not c. necessity

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