作业验收管理值为综合维修验收，也是经常保养和临时补修作业质量的检查标准
正确
暂无解析
Wecanhear（）fromthebackoftheroom.
Thethreementriedmanytimestosneakacrosstheborderintotheneighboringcountry_____bythepoliceeachtime.
Hearrived____London____acoldwinternight.
—Haveyoufinishedthework?
—Notyet,butnomatterhowharditis,we'llkeep___untilwemakeit.
Evenifhisletter（）tomorrow，it（）toolatetodoanything.