Directions: Fill in the blanks using the correct tense of the verb:
The climate is commonly _______ (consider) to _______ (be) the weather _______ (average) over a long period of time, typically 30 years. Earth’s climate is changing and this is _______ (cause) great concern. The changes in the atmosphere have _______ (become) one of the serious threats that the world faces today.
1
considered, be, averaged, causing, become.
2
considering, being, averages, cause, became.
3
considers, be, averaged, causes, become.
4
consider, being, average, causing, became.