56.Only when the war was over ____________ to his hometown.

　A．did the young soldier return　　 B．the young soldier returned

C．returned the young soldier　　 D．the young soldier did return

55.It was for this reason _________ her uncle moved out of New York and settled down in a small village.

　A．which　 B．why 　C．that　 D．how

54. If only he ___ quietly as the doctor instructed, he wouldn't suffer so much now.

　A. lies　　　 B. lay　　　 C. had lain　　　 D. shouldn't lie

53. She found her calculator ___ she lost it.

A. where　　　 B. when　　　 C. in which　　　 D. that

52. My uncle ___ until he was forty-five.

　A. married　　　 B. didn't marry　C. was not marrying 　　　D. would marry

51. While building a tunnel through the mountain, _______

A. an underground lake was discovered　B. there was an underground lake discovered

C. a lake was discovered underground　D. the workers discovered an underground lake

50. I shall stay in the hotel all day _______ there is news of the missing child.

A. in case　　 B. no matter　C. in any case　 D. ever since　

49. It was how the young man had learned five foreign languages _______ attracted the audience’s interest.

　A. so that　　 B. that　　 C. what　 D. in which　

48.John may phone tonight. I don't want to go out ______ he phones.

　 A. as long as　 　B. in order that　 　C. in case　 　D. so that

47.It was an exciting moment for these football fans this year, ______for the first time in years their team won the World Cup.

　 A. that 　　B. while 　　C. which　 　D. when