27．The law requires governments to increase investment in public transport, services and encour——青夏教育精英家教网—

摘要：27．The law requires governments to increase investment in public transport, services and encourage people to use public transport． A．improve B．to improve C．improving D．have improved

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. The law requires governments to increase investment in public transport, ___services and encourage people to use public transport.

A. improved B. to improve C. improving D. have improved

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The law requires governments to increase investment in public transport, ___services and encourage people to use public transport.

A. improved　　 B. to improve 　　　C. improving 　　 D. have improved

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