1.I am afraid I’ll turn to Mr.Black.It is ____.

1.I am afraid I’ll turn to Mr.Black.It is ____.
A.too difficult a problem B.a too difficult problem
C.so difficult problem D.a so difficult problem
2.— Do you know where your parents stay now?
— Oh,at ____.
A.Mr.Frank B.the Mr.Frank
C.Mr.Frank’s D.the Frank’s
3..— Do you enjoy skating?
— Yes,skating on real ice is ____.
A.great funny B.a great fun C.of great fun D.great funs