`text{1.}` I have just prepared the table.

`text{2.}` We haven't gotten ready for the party yet.

`text{3.}` She did the washing up a hour ago.

`text{4.}` Did you visit an orphanage last year ?

`text{5.}` Have uncle Tom already taken me to the school today?

`text{6.}` I haven't play chess since last year.

1. I prepared the table a few minutes ago (just)

=> I have just prepared the table 

2 We didn’t get ready for the party. (yet)

=> We haven't gotten ready for the party yet

3 She has already done the washing up. (a hour ago)

=>  She did the washing up an hour ago

4 Have you ever visited an orphanage? (last year)

=> Did you visit an orphanage last year ?

5 Uncle Tom took me to the school today? (already)

=> Uncle Tom has already taken me to the school today 

6 I didn’t play chess last year. (since)

=> I haven't played chess since last year