【单选题】
These candidates have vague notions of serving the company, [] they have never taken trouble to find out the actual tasks they will be required to do.
①
or
②
and
③
but
④
so
【单选题】
The president has an ____________ secretary.
①
extensive
②
efficient
③
effective
④
expensive
【多选题】
He has ______________ to be an engineer.
①
departed
②
decided
③
made up
④
made up his mind
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[integrity; conscience; yield; appoint; assure; ensure; demonstrate; clarify; preserve; scarce]8. She is a woman of[填空1]who has never given up her principles for the sake of making money.