Question

—       will she stay here?
— For      .

A．How soon, one hour and a half	B．How long, one and a half hours
C．How soon, one and half hours	D．How long, one hour and half

Answer 1

B

how短语用法。how long多长（时间），对一段时间提问，how soon多久，对将来的时间提问。由答语for…判断指一段时间，故A、C错。一个半小时用one and a half hours
或one hour and a half，故选择B。