Add a question-tag to these sentences

A- Add a question-tag to these sentences.
1) Open the door,
2) He's late this morning,
3) You shouldn't smoke,
4) Don't be late,
5) The hotel was quite good,
6) She cooks wee,
7) You can't tell the difference,
8) Don't turn round,.
9) They won't get there on time,
10)I'm speaking too loud,
11)He has done his homework,
12) Lizzie enjoyed her breakfast,
13)They always sleep after lunch,
14)They will come tomorrow,
15) You're coming with us,
16) Mary plays football,
17) You aren't staying at home morrow,
18) You didn't have any lessons this morning,
19)Ann's on holiday,
20) The students see it every day,​