[ Vocabulary ]
What does the word “efficient” mean?
A. Being effective without wasting time, effort, or expense
B. Being slow and careful
C. Being expensive and time-consuming
D. Being ineffective and wasteful
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Grammar › ViewHave beautiful colors and sweet songs.
A. sentence
B. fragment
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You _____ have helped me with the groceries! They were super-heavy!
A. could
B. must
C. may
D. can’t