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4Unfortunately,there are some disadvantages.……...hydroelectric power.
a)for b)to c)with d)about
*5-The three........take after their father.
a)triangles b)tricycles b)triplets d)tributes
1-Electricity is produced by means of turbines. (producing)
means of turbinesare used to producing electricity
2He provided the plants with water to keep them alive.(watered)
The plants are watered to be kept alive
1 -We all know this man. He is a very..........burglar.
a)famous b)notorious c)decent d)honest
2He got up early for fear of missing the train. (lest)
He got up early lest he might lose the train
1 He doesn't have the courage to refuse my offer, (aren't)
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