49．A．in                       B．on                C．under                        D．over

48．A．to write               B．writes           C．writing                 D．wrote

47．A．comes from         B．came out of   C．come over             D．came over

46．A．are                      B．were             C．is                         D．was

45．A．something            B．anything       C．no one                  D．nothing