How can the skylights help us to save electricity?

Read the passage carefully, and then answer the questions

GETTING BACK TO NATURE

The Little Morocco is a beautiful building. We used stone and mud to build the hotel. There are skylights – windows in the roof to let light in – so we save electricity. The skylights give us light in the day, so we don’t use electric lights. We don’t use chemicals to clean the rooms because we don’t want to damage the environment.

You can walk in the mountains near the hotel and see lots of local wildlife. Enjoy a boat trip on the lake and see the amazing waterfalls, or visit the beautiful caves.

What did they use to build the hotel?

Choose the correct word to fill each blank in the following passage

Our future house will be on the ocean. It will be surrounded by tall trees and blue sea but we only have salt water in the ocean. We need fresh water for (26) .......... (drink/ drinking/ to drink/ to drinking) and for growing food (27) ......... (in/ on/ at/ into) farms.

Ocean water is too salty (28) ......... (drink/ drinking/ to drink/ to drinking). It is also too salty for watering plants. We must have the (29) .......... (things/ suggestions/ ways/ ideas) to make fresh water from salty water. We should be (30) .......... (careful/ careless/ carefully/ carelessly) not to waste water.