______ is it that metals plays such an important part in our daily life?
A. Why B. What C. Where D. When
Early this year cruel snowstorms hit southern China, great transportation problems in some areas.
A．caused B．to cause C．having caused D．causing
--- Why can’t I smoke here?
--- At no time in the meeting room.
A．is smoking permitted B．smoking is permitted
C．does smoking permit D．smoking be permitted
Don’t interrupt me, John. you force me to tell you the truth at the moment?
A．Might B．Must C．Should D．Would
It was not until dark he found he thought was the correct way to solve the problem.
A．that; what B．that; that C．when; what D．when; that
You can ask him again if you like, but it won’t make any --- he’ll still say no.
A．adjustment B．difference C．contribution D．decision
