Of all the subjects,I like _________ history best because it gives us_________useful knowledge of things in the past.

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

Of all the subjects,I like _________ history best because it gives us_________useful knowledge of things in the past.

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

Of all the subjects, I like ____ history best because it gives us ____ useful knowledge of things in the past.

Of all the subjects, I like ____ history best because it gives us ____ useful knowledge of things in the past.

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

Of all the subjects, I like ____ history best because it gives us ____ useful knowledge of things in the past.

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