(2010四川省卷，Ⅶ，5)
在下面对话的空白处填入适当的单词，使对话的意思完整、通顺，每空限填一词(含缩写词)。
(Mrs. Cook arrives home after shopping for food.)
Walter: Mom, I cant find my eraser.
Mrs. Cook: Again? Thats the fourth (71) this month! Have you checked your pencil box?
Walter: Yes, but its not there.
Mrs. Cook: Did you look (72) in your room?
Walter: Yes, I did.
Mrs. Cook: How about the living room?
Walter: It (73) be there. I was doing my homework in my room and didnt even go into the living room.
Mrs. Cook: Well, then, borrow one from your brother for now. Ill (74) you find it after I put all the food in the refrigerator.
Walter: OK.
Mrs. Cook: Walter! Look what Ive (75) .
Walter: My eraser! Oh, I remember! I got some juice from the refrigerator, and...and....
Mrs. Gook: And put the eraser in the refrigerator.
Walter: Well, I dont remember that part.
Mrs. Cook: Well, take it, and be more careful next time.
答案：71. time 72. around 73. couldnt /cant 74. help 75. found