Duty is an act or a course of action that people ____ you to take by social customs, law or religion.
A. persuade B. request C. instruct D. expect
But for these interruptions, the meeting half an hour ago.
A. was finished B. would have finished
C. had finished D. would finish
_____ by the latest electronic toys, the little boy stood in front of the windows, without moving.
A．To be arrested B．Arrested C．Having arrested D．Arresting
It seems that living green is ________ easy and affordable. A small step makes a big difference.
A. exactly B. fortunately C. surprisingly D. hardly
A housing bubble is an economic situation _____ occurs when house prices rise much too fast.
A. which B. where C. what D. why
—Don’t be so naughty! Be your ________.
—Got it，mum.
A．manners B．age C．behavior D．politeness
