[ Grammar ]
The increase in …………………….. gases in the Earth’s atmosphere worries many scientists.
A. global
B. consumer
C. greenhouse
D. import
Select your answer:
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Tenses, Tag Questions, Phrasal Verbs › ViewYou have done your homework, ____________?
A. haven’t you
B. aren’t you
C. hasn’t you
Grammar › View
This person always says the truth.
A. Confident
B. Honest
C. Serious