[ Vocabulary and Grammar ]
Some people start to use ______ cars. You don’t need to fill them with gasoline.
A. slow
B. fast
C. friendly
D. electric
Select your answer:

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Adverb of Manners › ViewThe monkey can climb the tree ____________.
A. easy
B. easily
Vocabulary & Grammar › View
The bridge is the _________ structure I have ever seen – it doesn’t even shake!
A. shakiest
B. steadiest
C. riskiest
D. most relaxing
