单项选择题
The government has promised to do （）lies in its power to ease the hardships of the homeless.
A.what B.that C.all D.which
单项选择题 I’dratheryou（）makeanycommentontheissueforthetimebeing.
单项选择题 Thisyearwe’llproduce（）steelaswedidlastyear.
单项选择题 IfJohnhadtoldmeinadvance，I（）himattheairport.
