Possible variants

1. If only the weather were better! - Oh, yes! Then we would

go on a walking tour for a week or so. 2. In two days I’ll finish my

exams. - Oh, thank God! It will be a splendid opportunity to go

away on holiday and swim in the nice warm sea and bake in the

sun for hours on end. 3. I shan’t be through with my work before

the weekend, I’m afraid. - That won't/will never do. You'll have to

finish it by Thursday at the latest, or you'll be fired. 4. How long

will the job take? - How should I know? I would never have

thought that writing a book about my adventures in Africa would

be so difficult. (How should I know? The more I work, the more

work there seems to be left.) 5. We’re going there on Friday. - Then

we must hurry! There's very little time left. 6. She may come yet.

Let’s wait a bit. - That won’t do. We’ve already been waiting for

two hours or so. 7. He says it was your fault. - Oh, does he? I should

never have thought that he would tell such a blatant lie! (I would

never have thought him capable ofsuch a barefaced lie!) 8. How

long shall I stay here? - Why, until you are well again, my dear.

I suppose your recovery will take ten days or so.