_________ useful advice it is!
A. What B. What an C. How D. How an
－Do you mind me smoking here?
－______. Look at the sign. It says,“ No smoking.”
A. It doesn't matter B. No, I don't.
C. You'd better not D. Never mind.
The news ______, right?
A. sound exciting B. sounds exciting
C. sounds excited D. sounds excite
We all like teachers ________ a lot of knowledge.
A. has B. have C. with D. without
Some people don't know the importance of their health
________ they have lost it．
A．after B．when C．until D．as
It _____ the workers about three months to build the bridge．
A．cost B．spent C．took D．paid
