It was_____he was ill that he was absent yesterday.

It was_____he was ill that he was absent yesterday.

1. A.
   because
2. B.
   as
3. C.
   since
4. D.
   now that

It was_____he was ill that he was absent yesterday.

         A．because                  B．as                                   C．since                        D．now that

It was_____he was ill that he was absent yesterday.