Construction of the railways helped to develop the national _______ of Tanzania and Zambia.
A、economicC
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Ifyouwanttofindadecentlocationforyourownhome,________Mr.Smithforadvice.
Sixtypercentoftelevisionviewerschosehimastheir_______actor.
________somanypeopleintheUnitedStatesbeenoutofworkastoday.
Wemust______thattheexperimentiscontrolledasrigidlyaspossible.
The engine has broken and the boat is ______ on the water.
