Past simple or present perfect

I.Past simple or present perfect?
1.I(not/see)........Peter last week because he was ill
2.The President(visit)......... our country five years ago
3.I(meet).......Prince Charles twice-once five years ago and once this year
4.How often(you/go)........on holiday when you were a child?
5.(you/have)...........lunch yet?
6.What time(you/have)........lunch today?
7.Welcome back,John(you/have)...........a good holiday?
8.I arrivedon Monday and today is Thursday-I (be)......here three days?
9.I came on Monday and I left on Thursday .I(be)..........there four days
10.I (like).......tennis ever since I first watched Wimbledon on TV
11.I (work) ............. for Microsoft from 2007 to 2011
12.What time (you/arrive)home.........?
13.How long (you/spend)..........in London last summer?
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