单项选择题A.exceptB.except forC.onlyD.only for
单项选择题A.coveredB.crowdedC.fullD.plenty
单项选择题A.perpetualB.temporaryC.uniformD.temperate
单项选择题A.ordinarilyB.generallyC.originallyD.formerly
单项选择题A.retainedB.containedC.maintainedD.protected