<span>1. she is the most beautiful girl we have ever seen
2. he is one of the best engineers at the plant
3. today your answer is better than last week
4. this is the funniest story in the whole collection
5. I didn't like the latest chapter in this book
6. your composition must be as short as possible
7. they always choose the easiest way
8. what can be sweeter than honey?</span>
At,in,on,on,on ,to,on,on
5. In 6.at the7.at
<span>1 случай.</span>
<span>When he came home, he telephoned you. Обычное повествование, перечисление действий в прошлом. Past Simple. <em><u>Когда он пришел домой, он позвонил тебе</u></em>.</span>
2 случай.
When he comes home,he will telephone you. Условное предложение 1 типа. <em><u>Когда он придет домой, он позвонит тебе</u></em>.
3 случай.
When he comes home, he telephones you. Обычное повседневное действие, перечисление действий в настоящем. Present Simple. <em><u>Когда он приходит домой, он звонит тебе</u></em>.
I think that answer "To spend" is correct