关于人称代词的单句改错

2,My sister had to take a taxi.the taxi broke out, hardly had he got out of the taxi when a bus passed by

3,Pieces of paper on my desk flew high into the air and some flew out the open window,as I ran out to catch it, big drops of rain began to fall

4,After about three hours’ operation. Jack was out of danger. But when I see her this morning, he was lying in bed, his eyes closed

5,If it’s a false alarm and there is no fire, your teacher will lead us back to the classroom

6,I was eager to see him, but outside her room I stopped

7,He had a deep voice, which set himself apart from others in our small town

8,I was happy when the toy worked, but when things did wrong, I got angry and broke it,for a while parents bought me new toys

9,After class, I do a lot of exercises,prepare for the college entrance examination. You also read news and watch videos on the Internet and from other source

10,sometimes we may find difficult to follow the teacher and some slow learners may even give up learning English

11,some students cut potatoes into pieces， some dug holes， and the others put the pieces of potatoes into the hole,put the earth back and pushed them down hard

12,If students don’t have such a good ability, they will not be able to broaden our horizon and meet the future challenages

13, so far she has created many programs and one of which received an award at her province’s science fair

14,we have no clean water to drink it because of water pollution

15,we all enjoyed this precious day greatly, remebering the time we spent together and the people they were familiar with

16，But even if every large city purified and reused it’s water, we still would not have enough water