–Tom, what’s the matter with you? You look so worn out!

--Nothing serious. I ____ my new house all the day and I am afraid I won’t finish until tomorrow afternoon.

A．have whitewashed

B．am whitewashing

C．have been whitewashing

D．shall be whitewashing

人民警察在非工作时间遇到紧急情况，( )。

A．可以不履行职责
B．可以自愿履行职责
C．应当履行职责
D．待上级指示再履行职责