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15 Mr Smith is ……… our school play on his video camera.
A taking C recording
B writing D downloading
16 Mobile phones are ……… for making telephone calls when you are not at home.
A ideal C usual
B common D amazing
17 John can receive e-mails and messages ……… his smartphone when he is out.
A in C on
B at D to
18 Going on school trips helps to bring our lessons ……… life.
A in C to
B at D for
19 ……… plants don’t harm the environment because they use water to produce electricity.
A Wind power C Air
B Hydropower D Wind
20 The air in the big city is dirty and in the summer a thick ……… covers the sky.
A fumes C gas
B smog D pollution