6．(2015·广东高考)Mr.Johnson lived in the woods with his wife and children.He owned a farm ...Now it occurred to ________ that his farm had much potential and that the death of the cow was a bit of luck.

　　解析：him　"it occurred to sb.＋that从句"表示"某人突然想到"，此处指Mr.Johnson突然想到发生在他身上的事情，所以填him。

　　7．(2014·全国卷Ⅱ)Then the driver stood up and asked, "Did anyone lose a suitcase at the last stop？" A woman on the bus shouted，"Oh dear! It's __________ (I)．"

　　解析：me/mine　根据上文语境可知，此处的It如果指前面的suitcase的话，那么此空需要使用名词性物主代词mine，表示"那个箱子是我的"；如果指前面的anyone的话，那么此空需要用I的宾格形式me，表示"是我在上一站丢失了手提箱"。

　　8．(2014·辽宁高考)Raise your leg and let ________ stay in the air for seconds.

　　解析：it　句意：抬起你的腿让它在空中停几秒钟。此处填it指代前面出现的"your leg"。

　　9．(2014·广东高考)Last year, my brother and I went to Miami for a vacation.Some of my friends who had been there before said ________ was a wonderful holiday destination.

　　解析：it　从空格后的"a wonderful holiday destination"可知，这个地方就是Miami，故填it指代前面提到的地点。

　　Ⅱ.单句改错

　　1．(2018·全国卷Ⅲ)I had done myself homework, but I was shy.________________

　　解析：myself→my　此处表示我已经完成了我的家庭作业。my是形容词性物主代词，作 homework的定语，myself不作定语。

　　2．(2017·全国卷Ⅲ)About one month after this photo was taken, I entered my second year of high school ...This picture often brings back to me many happy memories of your high school days.________________

　　解析：your→my　此处意为"这张照片常常让我想起我高中时的许多快乐的记忆"，故应该使用代词my。

　　3．(2016·全国卷Ⅱ)If we go on a trip abroad, we can broaden your view and gain knowledge we cannot get from books.

________________