分类：教育/科学-学习帮助
问题：____thatIwasnotinLondonatthetime? 
____that I was not in London at the time.A I so hapnedB It so happenedC I was happenedD It was happened
回答：B

it so happened事实就是那样，它就这样发生了

happen没有被动语态。