It was __ that i found my books.是选in the place that i had le

It was __ that i found my books.是选in the place that i had le 怎么分析It was where i had left them that i found my lost books. It was not until I got home ____ I found that I had left my It was____ that I found my lost books. It was in the shop where I bought the pen that they found me I found my books I had left it.为啥用where不用the it happened that i found the ticket in my pocket 请问happened咋 I found that it was difficult to do the math probiem.I found .I went back to my hometown two years ago.I found that it __ I soon found that the work I was doing had already been done i soon found that the work i was doing had akready been done it was the first time in a year and a half that I had seen t