16. Eric: _______ do your sisters go to a movie? Jane: Once a month.
(A) How many
(B) How much
(C) How old
(D) How often
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統計: A(85), B(89), C(35), D(536), E(0) #3157783
統計: A(85), B(89), C(35), D(536), E(0) #3157783