except   lock   nearly    strong   tie

46．When Tony got to school，he found the classroom door was still　　．

47．It took me　　 a week to finish reading this book．

48．Paul exercises a lot this year，so he is getting much　　 than he used to be．

49．I'd like to get my father a　　 as a gift for his fortieth birthday．

50．All the students went to the concert　　 Bill because he didn't feel well．