问题标题：
【单项选择】Thebuilding（）in1999.A.builtB.isbuiltC.wasbuiltD.build【单项选择】Thebuilding（）in1999.A.builtB.isbuiltC.wasbuiltD.buildWhen（）theaccident（）?A.was；happenB.did；happenC.is；happenD.was
问题描述：
【单项选择】Thebuilding（）in1999.A.builtB.isbuiltC.wasbuiltD.build
【单项选择】
Thebuilding（）in1999.
A.builtB.isbuiltC.wasbuiltD.build
When（）theaccident（）?
A.was；happenB.did；happenC.is；happenD.was；happened
Thechildren（）bythenurseinthekindergartennow.
A.werelookedB.arebeinglookedafterC.werelookedafterD.arelookingafter
ThatnewTVset____inChina.
A.madeB.aremadeC.makesD.ismade
刘桂峰回答：
1.C
2.B
3.B
4.D
主要是考时态及主被动用法.
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