_______ is often the case, he didn’t study hard and failed to pass the test.

A. What                       B. As                            C. It                      D. Which

________ is often the case, he didn't study hard and failed to pass the test．

1. A.
   What
2. B.
   Which
3. C.
   It
4. D.
   As

18._________is often the case, he didn’t study hard and failed to pass the test.  

A. What                B. Which               C. It                      D. As

_________is often the case, he didn’t study hard and failed to pass the test．

       A．What       B．As     C．It      D．Which

______ is often the case, he didn’t study hard and failed to pass the test.

A．What                    B．Which                            C．It                                    D．As

18._________is often the case, he didn’t study hard and failed to pass the test.  

A. What                B. Which               C. It                      D. As

       is often the case, he didn’t study hard and failed to pass the test．

A．What            B．As           C．It            D．Which

______ is often the case, he didn't study hard and failed to pass the test.

A. What         B. Which         C. It              D. As

18._________is often the case, he didn’t study hard and failed to pass the test.  

 ________ is often the case , he didn’t study hard and failed to pass the test.

A. What   B. Which   C. It   D. As