The new machine, according to the report, will work twice as fast, ______ greatly reducing costs.
A.so B.even C.yet D.thus
Would it be ______ for you to pick me up at four o’clock and take me to the airport?
A.comfortable B.vacant C.convenient D.handy
—Have you worked here since you graduated?
—No, I ________ at a factory in Beijing for six years.
A.would work B.have worked C.had worked D.worked
________ medicine works in a human body is a question ________ not everyone can understand fully.
A.What; that B.How; that C.That; what D.That; which
The girl devoted all her spare time she had ______ others.
A.to help B.helped C.to helping D.help
We won’t start the work until all the preparations __________.
A.are being made B.will be made
C.have been made D.had been made
