[ Grammar ]
Peter would have crossed the border if he ___________ his passport.
A. didn’t forget
B. hadn’t forgotten
C. wouldn’t forget
D. wouldn’t have forgotten

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A. are
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____________ protect the environment, California imposed a ban on single-use plastic bags at large retail stores in 2014.
A. Not in order to
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Vocabulary › View
What is the meaning of “Superfluous”?
A. Necessary
B. Unnecessary
C. Essential
D. Required
