[ Grammar ]
Her ____ of English grammar is very extensive.
A. knowing
B. knowledge
C. acknowledgement
D. known

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Grammar › ViewRichar Strauss composed ‘Electra’ and ‘A hero’s life’.
A. ‘Electra’ and ‘A hero’s life’ were composed by Richard Strauss.
B. ‘Electra’ and ‘A hero’s life’ was composed by Richard Strauss.
C. ‘Electra’ and ‘A hero’s life’ are composed by Richard Strauss.
Grammar › View
My sister _________ make breakfast.
A. doesn’t
B. don’t
C. not