211. have ever seen

212. had ever seen

213. had ever seen

214. have ever seen 

215. had found/ was

216. had already given/ got

217. came/ had gone

218. had already left/ got there

219. hadn't seen me/ met

220. had washed

211.This is the worst storm I have ever seen (ever see).

212. It was the first time I had ever seen (ever see) such a beautiful girl.

213. It was the most exciting film I had ever seen (ever see).

214. This was the dirtiest looking dog I had ever seen (ever see).

215. When I came here I had found (find) that everything was (be) ready.

216. I was late. The teacher had already given (already give) a quiz when I got (get) to class.

217. When I came (come) there, she had gone (go) away half an hour before.

218. Sam had already left (already leave) when we got thers (get there).

219. My friend hadn't seen me (not see) me for many years when I meet (meet) him last week.

220. After John had washed (wash) his clothes, he began to study.