Choose a sentence which has the same meaning as the original one.

There won't be enough space to live if we don't try to limit the world’s population.

We shouldn't throw the bottles away but they can be collected and recycled.

We shouldn't throw the bottles away because they can't be collected and recycled. 

We shouldn't throw the bottles away because they can collect and recycle. 

We shouldn't throw the bottles away because they can be collected and recycled.

Unless we don’t save water, we will have to suffer from water shortage.

If we save water, we won't have to suffer from water shortage.

Unless we save water, we won't have to suffer from water shortage.

If we save water, we will have to suffer from water shortage.

If she can speak English well, she would apply for the job.

If she could speak English well, she will apply for the job.

If she could speak English well, she would apply for the job.

If she can speak English well, she will apply for the job.

We shouldn't swim in this lake although water is highly polluted.

We should swim in this lake because water is highly polluted.

We shouldn’t swim in this lake because water is highly polluted.

We shouldn’t swim in this lake because water isn't highly polluted.