Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.  

A. a; the                 B. / ; /          C. / ; a    D. the; a

Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.

1. A.
   a; the
2. B.
   / ; /
3. C.
   / ; a
4. D.
   the; a

Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.  

A. a; the                 B. / ; /          C. / ; a    D. the; a

Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.

A. a; the                  B. / ; /             C. / ; a              D. the; a

Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.　 A. a; the 　 　B. / ; / 　 　C. / ; a 　 D. the; a

Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.