Writing Task 3. Present Perfect Tense
1. She has (not finish) her tasks .( - )
2. I have (do) my homework. (+)
3. We (be) to London. (-)
4. My uncle (buy) all the presents. (?)

1. We use electronic machines fulfilling (причастие I, определение) the most complicated calculations in industry and agriculture.
Мы используем электронные машины, которые выполняют самые сложные расчеты в промышленности и сельском хозяйстве
2. The airliner designed (причастие II, определение) by N can carry only 80 passengers. Самолет, спроектированный N, может перевозить только 80 пассажиров
3. The experimental facts can be explained (причастие II, часть сказуемого) by this theory. Данные, полученные в ходе эксперимента, можно объяснить этой теорией.

I ate pizza with my friend yesterday
Did I eat pizza with my friend yesterday?
No I didn‘t eat pizza with my friend yesterday.
My parents went to the restaurant
Did my parents go to the restaurant?
My parents didn’t go to the restaurant
We wrote a test yesterday.
Did we write a test yesterday?
We didn’t write a test yesterday.
Last week my classmates and I saw a new film
Did my classmates and I see a new film last week?
Last my classmates and I didn’t see a new film.
I took a bath yesterday.
Did I take a bath yesterday?
I didn‘t take a bath yesterday