【正确答案】：
IN ORDER TO PROTECT MATILDA HERSELF AND OTHER CHILDREN, THE DOCTOR HAD TO MAKE SURE WHETHER SHE HAD DIPHTHERIA OR NOT, SO THAT HE COULD TREAT HER IN TIME.
【题目解析】：考点：为了：in order to；是否：whether...or not；及时：in time。句子结构：目的状语从句+宾语从句+结果状语从句，In order to引导的目的状语从句，make sure后面是whether引导的宾语从句，so that引导结果状语从句。