用括号中的连词改写以下句子
问题描述：
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
1. After putting the cake in the oven, I forgot all about it. 2. Two hours had passed when I smelled something burning. 3. On going into the kitchen, I found it full of smoke. on +ving 当.时,一.就....