Раскрыть скобки.Помогите.С 6 по 27.Безотлагательно!!!

6 When did your children come back to town? They haven't come back yet.
7 Have you already done the translation? You only began it 20 minutes ago.
8 Who told you this story?
9 Who were you talking to when I came in?
10 He has been translating this article for 3 hours already and he hasn't finished yet.
11 I have been living in Minsk for 10 years already but I will leave for another place soon.
12 I 'm not expecting any message, but if someone rings while I am out could you say that I will be back at 6 p.m.
13 We have missed the bus. Now we are having to walk home.
14 What do you think of his last book? I like it very much. It's the most interesting book I have ever read .
15 Yesterday I had a bad fall whlie he was repairing the roof of the house.
16 Mark, why are you making such a horrible noise? I lost my keys and I am trying to wake my mother but she doesn't hear anything.
17 Have you seen my bag anywhere? I have looked it for ages but I haven't found yet.
18 When did they get married? Last year.
19 It is still raining. Let's stay at home.
20 We arrived 10 minutes ago.
21 Somebody is using my computer at the moment.
22 Where's your key? I am afraid I lost it.
23 I walked along the road yesterday when I met my friend.
24 Has Tom arrived? Not yet.
25 She paid for her ticket and left.
26 The postman usually comes at 8 in the morning. It is half past 9 now, but he hasn't come yet.