请帮我解释并解决两个英语练习题He asked me _ with me.A what is the trouble B

请帮我解释并解决两个英语练习题
He asked me _ with me.
A what is the trouble B what wrong was
C what was the matter Dwhat trouble it is请就各选项具体解释
I am sure_he said is true.
A that B about that C of that Dthat what
Why the explosion occurred was _the laboratory attendant had been careless.A.for B.because C.since D.that