Fill with appropriate modal verb :
one of the ____ problems facing the world today is global warming
many scientists believe that the production of carbon dioxide and greenhouse gases is having a heating effect on the atmosphere and this ______be very____ human life we ____ examine the problem of global warming and suggest some ways ______ solving it.
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One of the major problems facing the world today is global warming.
Many scientists believe that the production of carbon dioxide and greenhouse gases is having a heating effect on the atmosphere and this could be very dangerous/harmful for human life. We should examine the problem of global warming and suggest some ways for solving it.
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2
Answer:
a) biggest
b) could
c) dangerous for
d) should
e) of
Explanation:
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