[ Grammar ]
Everyone should act ______in order to protect our environment.
A. responsible
B. responsibility
C. responsibly
D. responsibilities
Select your answer:

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Grammar › View__________ your computer regularly to do your homework?
A. Do you use
B. Are you using
Grammar › View
It’s impossible to imagine how beautiful the Taj Mahal is unless you ___ it with your own eyes
A. Had seen
B. Has seen
C. Have seen
