I don't understand why he didn't tell the truth.とは 意味・読み方・使い方

I can't figure out why he didn't tell the truth.

I don't understand why he didn't tell the truth.

I can't figure out why he said so.

I don't know understand why he said that.

I don't know why Tom didn't tell the truth.

I couldn't figure out what he meant.

I don't understand why he said such a thing to me.

I cannot imagine what made me say a thing like that.

Frankly speaking, it was difficult for me to make out what he was saying.

We can't understand why she said such a thing.

I could make nothing of what he said.

I couldn't understand anything that he said.

I cannot figure out why he has done that.

I can't understand why he did that.

I can not tell to what extent his statement is true.

I couldn't make out what he was saying.

I can't understand why he did such a thing.

I could not believe his statement.

I wonder how far I can believe him.

I don't know if he was serious about everything he said.

I can't figure out why he did it.

I fail to understand his true aim.

How he manages to keep alive, is more than I can tell.

I don't understand why he is so liked even though he is a liar.

He gave no explanation why he had been absent.

Why he did it is beyond my comprehension.

I couldn't make out what he was saying.

I couldn't understand what he was saying.

I can make (absolutely) nothing of what he says.

What he said doesn't make sense to me.