【多选题】某研究者拟研究郑州市居民的家庭生活质量,那么下列说法中正确的有
【单选题】某研究者拟研究郑州市居民的家庭生活质量,那么郑州市的每一户家庭可以看作是研究总体中的一个( )
【单选题】John doesn't often go to the theater.
A.
John often doesn't go to the theater.
B.
John doesn't go often to the theater.
C.
Often John doesn't go to the theater.
D.
John doesn't often go to the theater.
【单选题】—Whose computer doesn’t work? — ____ ,I think.
【单选题】Molly doesn't eat fish. ______.
【判断题】John seldom communicates with others, doesn't he?()