单项选择题
（）is still unknown.
A.How he could break into the bankB.How he was able to break into the bankC.How he dare to break into the bankD.How dared he break into the bank
单项选择题 I had to tell the truth，（）？
单项选择题 I’m sorry to say（）of your answers is correct.
单项选择题 I am（）of the two children in our family.
