The energy from the sun and wind is very cheap and it will never ________.
A.run out B.put out C.work out D.carry out
—________we faced while we were carrying out the task!
—Thanks to the volunteers, we could avoid it.
A.How big disaster B.How good luck
C.What a big disaster D.What good luck
All the guests at this hotel________use the business center and the exercise rooms at no extra cost.
A.can B.should C.must D.need
— My feelings for you have not changed, my sweet!
—But you have changed. As time goes by, you are not as you________.
A.are B.were C.will be D.have been
The Hong Kong-Zhuhai-Macao Bridge ________ is a masterpiece（杰作）in modem engineering has won high praise from the world.
A.what B.why C.where D.which
— Why are you driving so slowly, Dad?
—You can't be________ careful while driving at rush hour.
A.so B.very C.too D.quite
