[ Grammar ]
One of the most effective vegetable protein substitutes is the soybean_______used to manufacture imitation meat products.
A. which can be
B. it can be
C. who can be
D. can be
Select your answer:

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Grammar › ViewTrends ______________ change in 15 years.
A. may
B. go
C. is
D. are
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The manager justified _____ late to the presentation because of unavoidable delays.
A. being
B. to be
C. explaining
