[ Grammar ]
The submarine helps us study life in the ocean giving us different views.
What does the prefix sub- mean?
A. under
B. look
C. bottom
D. above

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Grammar › ViewWhat is the preposition in the sentence?
Charles Schulz wrote 17,897 “Peanuts” comic strips in his lifetime.
A. in his lifetime
B. in
C. lifetime
D. his
Vocabulary › View
the percentage of extra money you get if you invest a sum of money or that you pay if you have borrowed that money
A. money
B. investment
C. interest rate