1) When you were in St. Petersburg last?
2) Over the past year our district has changed a lot.
3) The last time he didn`t  have enough time to prepare.
4) Last time you promised to come to us.
5) The last few weeks it didn`t rain and the soil is quite dry.
6) When you got the news from him last?
7) For the last time, he has read many interesting books.
8) Why is he late? For the last time, it has happens to him quite often.
9) The last few days, he has work a lot.
10) Last time we discussed this issue detailed.
11) I haven`t seen him long ago.
12) I saw him long ago. 
13) We haven`t heard about him long ago.
14) I read about him long ago.
15) The last time we met a long time ago.
16) We haven`t meet before.
17) You used to not be so rude.
18) Who is this man?
19) Sad, I haven`t know that before.
20) You haven`t did so many mistakes before.