1 . Housework has ______ been viewed as women’s work.
What part of speech(词性) can be used in the blank?

A．Noun（名词）	B．Adjective（形容词）
C．Verb (动词)	D．Adverbial（副词）

2 . “What are you doing?” Bruno asked in _______, although he wasn't happy to come home and find someone going through his possessions.

A．as a polite tone as he could muster	B．as polite a tone as he could muster
C．as polite as a tone he could muster	D．a tone polite as he could muster

3 . They all looked ____ at the master and felt quite _____．

A．sad; sad	B．sadly; sadly
C．sad; sadly	D．sadly; sad