一道英语题目
()Thelawrequiresgovernmentstoincreaseinvestmentinpublictrainsport,whichisnowinpoorcon...
( )The law requires governments to increase investment in public trainsport,which is now in poor condition,____services and encourage people to use public transport.
A.improve B.to improve
C.improving D.having improved
为什么答案是A?请解释一下 展开
A.improve B.to improve
C.improving D.having improved
为什么答案是A?请解释一下 展开
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