1 . _______________ so many natural disasters, we come to realize that we should stress safety and value life.(experience)
经历了如此多自然灾害以后，我们逐渐意识到我们应当重视安全，珍惜生命。

2 . _______________he could go home, Guo Bin was all smiles and said he had no fear of return to his hometown.(inform)
得知可以回家后，郭斌微笑着说，他并不害怕回到家乡。

3 . ______to work overtime that evening,I missed a wonderful film.

A．Having been asked	B．To ask
C．Having asked	D．To be asked