44．A．in                       B．of                       C．by                          D．at

43．A．more fast             B．much faster           C．more faster             D．much fast

42．A．hours                         B．days                    C．minutes                  D．seconds

41．A．in                       B．on                       C．above                    D．over

40．A．Of                      B．With                   C．Without                 D．By