Разложите многочлен на множители, могите пожалуйста (-а-б) (б-а)=? ​

Заполните пропуски одним из следующих местоимений.

 a) some, any, no.
 
Example: There were ... of my friends there. - There were some of my friends there.
 
1. There were ... of my friends there. 2. Well, anyway, there is ... need to hurry, now that we have missed the train. 3. Have you ever seen ... of these pictures before? 4. There is ... water in the kettle: they have drunk it all. 5. There were ... fir-trees in that forest, but many pines. 6. We could not buy cherries, so we bought ... plums instead.
 
b) somebody, anybody, nobody.
 
Example: I saw ... I knew at the lecture. - I saw nobody I knew at the lecture.
 
1. I saw ... I knew at the lecture. 2. I dare say that there may be ... at the lecture that I know, but what does that matter? 3. Do you really think that ... visits this place? 4. I have never seen ... lace their boots like that.
 
c) somewhere, anywhere, nowhere.
 
Example: I haven't seen him ... . - I haven't seen him anywhere.
 
1. I haven't seen him ... . 2. I know the place is ... about here, but exactly where, I don't know. 3. Did you go ... yesterday? - - No, I went ... , I stayed at home the whole day.

Помогииииииите! Какие слова с чередующимися гласными в корнях -ЛАГ- , -ЛОЖ-. Слагать, лагерь, изложили, ложка, ложбинка(неглубокий овраг) ,предложение,ложный, флаг, ложа, ложа ,лог(овраг с отлогими склонами) Огромное спасибооо!