题干
Susan ________ be here now because she has just gone to New York.
A：mustn't
B：can't
C：needn't
D：may not
答案(点此获取答案解析）
B
Susan ________ be here now because she has just gone to New York.
A：mustn't
B：can't
C：needn't
D：may not
的示数将
示数的差值跟电压表 
