Choose the option that best completes each of the following sentences.

1. Nuclear power is not popular __________ it can be very dangerous.

2. In the future, holiday-makers __________ in undersea hotels.

3. __________ does this book cost? Is it expensive?

4. Jack doesn’t have __________ to buy new lights for his house.

5. Volunteer students hope to __________ $500 to help the old lady.

6. The students at our school are __________ clothes and stationary to poor children in the flooded provinces.

7. Fossil fuels are efficient __________ there won't be enough of them for the future.

8. Overpopulation has negative __________ on the environment.

9. To prepare for the presentation, we can __________ information online.

10. We can’t go this way. It is a __________ street.