把下面句子合并成宾语从句,1.Lucy is glad.Her mother will buy an MP4 for her.2.Will it be sunny tomorrow?I am not sure of that.3.Why didn't he come?I don't know.Thanks
问题描述：
把下面句子合并成宾语从句,
1.Lucy is glad.Her mother will buy an MP4 for her.
2.Will it be sunny tomorrow?I am not sure of that.
3.Why didn't he come?I don't know.
Thanks
答
1.Lucy is glad that her mother will buy an MP4 for her.
2I am not sure if it will be sunny tomorrow.
3.I don't know why he didn't come