[ Abstract Noun vs Concrete Noun ]
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A. Concrete
B. Abstract

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Grammar and Vocabulary › ViewThe parade and performance…………….after opening ceremony.
A. occur
B. happen
C. take place
D. held
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Smartphone can be a great learning _______ but you need to think of how to use it effectively.
A. benefit
B. choice
C. invention
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Grammar › ViewI don’t know where Jessica is. She _____ be with her friends
A. might
B. must
C. can’t
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He ___________ to the new library last week.
A. go
B. went
C. goes
D. going