[ Grammar ]
The article is about global warming, _____ has caused many negative impacts on the environment.
A. what
B. where
C. which
D. it

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Grammar › ViewCategory Five hurricanes ___ cause complete roof failure on many residences and industrial buildings.
a. will
b. didn’t
c. won’t
d. might
Grammar › View
Are you from Russia?
A. No, I not.
B. No, am I not.
C. No, I’m not.
· I haven’t …….. matches. (lucifers)
a. some
· b. any
Vocabulary › View
When you tell your friend that pizza is the best food.
A. infer
B. contribute
C. claim
