58．A．but                  B．and                 C．still                 D．even

57．A．before             B．behind             C．after                D．in the front of

56．A．working on      B．working out     C．thinking about  D．understanding

55．A．important        B．more important       C．less important   D．too important

54．A．outside            B．out                  C．for                  D．at

53．A．learning           B．learned            C．to learn           D．learn

52．A．something        B．anything          C．nothing            D．everything

51．A．any other         B．some other       C．others              D．the other

49．Don’t___________  your son too much．You will make him too stressed out．