[ Grammar ]
I haven’t seen my parents _____ last Christmas.
A. already
B. before
C. for
D. since

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Modal Verb › ViewI think I _____ go shopping. We’ve run out of food.
A. must
B. could
C. need
D. should have been
Grammar › View
People still argue about whether or not OJ Simpson committed a CRIME.
CRIME is a(n)
A. concrete noun
B. abstract noun
C. collective noun
D. plural noun
All messages are transmitted through ___________, the means for sending communiction.
A. verbal
B. nonverbal
C. channels
D. formal
Present Perfect › View
Look! She …………….. a new dress! (buy)
A. buyed
B. have bought
C. has bought
