用括号中的连词改写以下句子：

题目

用括号中的连词改写以下句子：
1 I put the cake in the oven. I forgot all about it. (After putting)
2 Two hours had passed.I smelled something burning.(When)
3 I went into the kitchen.I found it full of smoke.(On going

答案

after putting the cake in the oven, i forgot all about it.
two hours had passed when i smelled something burning.
going into the kitchen, i found it full of smoke.