40．A．unless                    B．because                  C．as soon as               D．as long as

39．A．good                     B．better                     C．best                       D．well

38．A．to be                     B．to                          C．be                         D．to do

37．A．have                      B．make                     C．take                       D．product

36．A．if                          B．when                     C．since                      D．although

35．A．clearly                    B．carefully                 C．slowly                   D．quickly

34．A．say                         B．talk                        C．tell                        D．speak

33．A．like                        B．know                      C．help                       D．understand

32．A．listening                 B．talking                    C．reading                  D．writing