—The boys are not doing a good job at all，are they?
—_________.
A.I guess not so B.I don’t guess
C.I don’t guess so D.I guess not
—The boys are not doing a good job at all，are they?
—_________.
A.I guess not so B.I don’t guess
C.I don’t guess so D.I guess not
D
I guess not “我认为他们没做好工作”，为了避免重复，用not替代are not doing a good job at all。