[ Grammar ]
Which word fits in the blank?
Dolphins live in groups, and ______ take care of each other.
A. them
B. they
C. these
D. his
Select your answer:
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Vocabulary › ViewWhen there is not a lot of something.
A. scarce
B. flow
C. convert
D. renewable
Vocabulary › View
What is the meaning of “abridge”?
A. Expand
B. Shorten
C. Elaborate
D. Clarify