几道首字母填空题
1.wedon'tneedtogiveupcarsbutweneedtoi-----better,cleanerengines.
2.ivisitedsomerelativesr-----inasmallvillage.
3.thatwouldreducer----andairpollution.
4.nowthebanksareo----ofmoneyandgovernmentsaroundtheworldhavehadtostepinandhelpthem.