_____ you keep on trying, I really don’t mind whether you can come up top in your class.

A．As long as         B．Even though       C．As soon as         D．The moment

I really don't know _____ I put my wallet．

       A．where was it                 B．it was where that

       C．where was it that．           D．where it was that

______ I really don’t like art, I find his work impressive.

A. As          B. since       C. if      D. While

There isn’t any difference between the two, I really don’t know ________．

1. A.
   where to choose
2. B.
   which to choose
3. C.
   to choose what
4. D.
   to choose which

I really don’t know ________ I had my money stolen.

A．when was it that                        B．that it was when

C．where it was that                        D．it was where that