Find the mistake :- plz

1.He didn't buy the chain of restaurants after he had become rich

2. He had eaten meat when he fell ill

3. Having watching tv , I went to bed

4.He had enjoyed the food as soon as he tasted it

5.No sooner the boy had fallen off his bicycle than the policeman hurried to help him

6.I had stayed for two hours in the clinic after the doctor arrived

7. No sooner had he seen the thief when he told
the police

8.after taken my measurements , the tailor cut the material

9. when we returned back home, we found that someone broke into our flat

Question

Find the mistake :- plz

1.He didn't buy the chain of restaurants after he had become rich 

2. He had eaten meat when he fell ill

3. Having watching tv , I went to bed

4.He had enjoyed the food as soon as he tasted it

5.No sooner the boy had fallen off his bicycle than the policeman hurried to help him

6.I had stayed for two hours in the clinic after the doctor arrived 

7. No sooner had he seen the thief when he told 
the police

8.after taken my measurements , the tailor cut the material 

9. when we returned back home, we found that someone broke into our flat