72．He couldn’t a　　　　　　 for(解释)the fact that the man was killed in his house．

71．Without the teacher’s p　　　 ，no one is allowed to leave the group．

70．The speed of cars and trucks is 1　　　　 to 40 kilometers per hour in large cities in China．

69．OK，that’s what we are suggesting-does anyone have any　　　　　　 　(评论)?

68．Progress so far has been very good．We are“　　 (因此)，confident that the work will be completed on time．

67．Although she didn’t mention any names，everyone knew who she was r 　　to．

第一节：单词拼写：根据首字母或汉语提示，在下面的横线上写出下列单词的正确形式。(共10小题；每小题1分，满分10分)

66．He　　　　　 (收集)his clothes together and put them in a box．