青少版新概念Unit19-21单元测试Name________Class_________Score_________一、选择（1’x15）（）1、A：_____timeisit?B:It’saquarterpasteleven.A:WhenB:WhichC:What（）2.A:I’msorry,I____gonow.Iamlate.B:Ok.Bye!A:canB:mustC:may（）3.A:_____isyourlesson?B:It’satthreeo’clock.A:WhenB:WhatC:How（）4.What’stheproblem,Mary?B:Ican’tfind______Mathsbook.A:meB:myC:us（）5.A:Oh!Hereitis!B:____asurprise!A:WhatB...
