越忙碌的公务员，其工作效率越高。
Washerisamachine____(用它我们洗衣服)orapersonwhoiswashing.
WhichgateisflightBA472toMadridleavingfrom?
It’snecessary_________usallto________
Thetimehascome_____wemakeextensiveuseofnuclearenergy.
YourL/CNo.111for￡2000issuedbytheBankLtd,Liverpool,has____.
