Read the passage and decide which answer A,B,C or D best fits each space.
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 (27)_____and for growing food (28)______farms.
Ocean water is too salty (29)_______. It is also too salty for watering plants. We must have the (30)________to make fresh water from salty water. We should be (31)_____ not to waste water.
Câu 27.A.to drink B.to drinking C.drink D.drinking
Câu 28.A.into B.at C.in D.on
Câu 29.A.drink B.for drink C.drinking D.to drink
Câu 30.A.ideas B.ways C.suggestions D.things
Câu 31.A.carefully B.carelessly C.careless D.careful
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Sinh Học lớp 12
