[ Prepositions ]
Long Vu forgot his homework _________ mistake.
A. at
B. on
C. by
Select your answer:
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Grammar › ViewInto Thin Air, a best-selling book, is fascinating, however, it is challenging stylistically.
A. No change
B. delete comma after book
C. change comma after fascinating to a semicolon
D. delete the comma after however
Grammar › View
I wake up …………. 8 o`clock
A. in
B. on
C. at