赞题库-背景图

单项选择题

While this arrangement was a major improvement over its ______, it still had drawbacks.

A．premium
B．prevalence
C．premise
D．predecessor

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热门试题

单项选择题A．singsB．sangC．sungD．singing

A．sings
B．sang
C．sung
D．singing

单项选择题A．crewB．membersC．corpsD．fellows

A．crew
B．members
C．corps
D．fellows