XI. Joining two sentences, using the words in brackets.

1. If we don't conserve water, we will face serious water shortages.

If + S1 + V (present simple) +..., S2 + will/ may/ can/... + V.inf

2. Because of the awful weather, we didn't enjoy our camping holiday.

Because of + N-phrase / V.ing

3. Since plastic bags are biodegradable, they will remain in the environment for many years.

since (conjunction) = because

4. If Paul thought about the planet, he wouldn't waste so much water.

If + S1 + V (past simple) +..., S2 + would/ could/ might + V.inf

5. Water pollution leads to the death of many aquatic animals such as fish.

lead to sth

6. Because the climate is changing, the earth is getting warmer.

Because + clause

7. Unless we stop cutting down so many trees, we endanger our oxygen supply.

Unless = If not

8. When people begin to recycle, they generate much less trash.

trash (n): rác

9. Even though the ozone layer is necessary for human existence, we are damaging it.

Though/ Although/ Even though + clause,...

10. Sue was exposed to radiations when she was young, so she is suffering from skin cancer.

skin cancer : ung thư da

1) If we don't conserve wter , we'll face serious water shortage.
3)Since plastic bags are non-biodegradable,they'll remain in the environment for many years.
4)If Paul had thought about the planet,he wouldn't had wasted so much water.
5)Water pollution happens which leads to the death of aquatic animals such as fish
6)The earth is getting warmer because the climate's changing
7)Unless we stop cutting down so many trees,we'll be endangering our oxygen supply
8)When people begin to recycle they generate much less trash
9)Even though the ozone layer is necessary for human existence , we're damaging it