CONDITION - 02

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

PUT THE VERBS IN THE CORRECT TENSE



1. If the submarine (CATCH) fire last night, the crew (HAVE TO) scuttle it.

2. If the ocean's water (NOT CONTAIN) high levels of oxygen, corrosion (NOT BE) so fast.

3. According to the naval authorities, plutonium (NOT LEAK) into the ocean provided the engine's housing (WITHSTAND) corrosion.

4. If Russia (SIGN) the dumping ban, they (NOT BE ABLE TO) dump their old submarines off the Norwegian coast.

5. If the fish (EAT) the plutonium, it (BECOME) unfit for human consumption.

6. If titanium flakes (DRIFT) up to the upper layers of the ocean, they (ACCUMULATE) and finally (SINK) back down to the ocean floor. fortunately, they (BE) too heavy.