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A is a violent storm with very strong winds that move in a circle.
Correct Answer: A. tornado
The earthquake caused a lot of ___ to the infrastructure of this area.
Correct Answer: C. damage
Shopping online saves you the ___ of travelling.
Correct Answer: C. convenience
During ___ shopping centres attract a lot of customers.
Correct Answer: C. office hours
There are mainly two ___ of water pollution: man-made and natural.
Correct Answer: C. reasons
We ___ an experiment in the lab when the earthquake happened.
Correct Answer: C. were doing
It is ___ easier to prevent harm to the environment than to repair it.
Correct Answer: B. never
___ he heard the warning of the tornado, he went searching for his children.
Correct Answer: B. As soon as
They were searching for information for their project ___ their parents were gardening.
Correct Answer: B. while
The timetable says that the beach clean-up ___ from 8 a.m. to 9 a.m.
Correct Answer: D. is
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