单选题：It was __________ computer games that took the boy a lot of

题目分类：成人英语三级
题目类型：单选题
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It was __________ computer games that took the boy a lot of time that he ought to have spent on his lessons． A．to have played
B．playing
C．played
D．having played

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It is his advice on how English well yo

It is his advice on how __________English well __________ you a lot of trouble．A

分类：成人英语三级题型：单选题

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Mr．Brown doesn't think that all bad languages should be allo

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分类：成人英语三级题型：单选题

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泡沫灭火系统的严密性试验压力为公称压力的（　　）倍。

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施工现场临时搭建的宿舍、办公用房，建筑层数为3层或每层建筑面积大于200m2时，应设置不少于（　　）部疏散楼梯。

施工现场临时搭建的宿舍、办公用房，建筑层数为3层或每层建筑面积大于200m2时，应设置不少于（　　）部疏散楼梯。A．1 B．2 C．3 D．4

分类：成人英语三级题型：单选题

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分类：成人英语三级题型：单选题

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