Примеры:
The car is OK again now. I (repair) it.
The car is OK again now. I have repaired it.

My hands are very dirty. I (repair) the car for two hours.
My hands are very dirty. I have been repairing the car for two hours.

Решайте:
Tom started reading a book two hours ago. He (read) for two hours. *
Look! Somebody (break) that window. *
My brother is an actor. He (appear) in several films. *
I (know) him for 10 years. *
I (lose) my address book. *
I (read) the book you lent me, but I haven't finished it yet. It's very interesting. *
I (read) the book you lent me, so you can have it back now. *
Lisa (write) ten letters today. *
He (win) the national championship four times. *
She (read) 53 pages. *
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Hi Masha! How are you? i haven't written to you in a long time , but now i want to share my idea . you know, i really like to read, but at the same time i rarely buy books , mostly i take them from the library , or read e-books . But recently, I went to visit my new friend , and you know, he has a separate room for the library , there are a lot of books, neatly displayed in a row , and it really inspired me to create my own home library . I wasn't really interested in it before , but I already bought shelves for books , my dad installed them in my room. I also bought a book, and i'm reading it now . In the future, I want to have a very large home library with a variety of books . Masha, do you have a lot of books at home ? How do you feel about the idea of collecting books? See you soon, Мasha!

Uncountable nouns - are pouring, loose, names of sports, names of school subjects, science, abstract concepts and words with suffixes ness, th, tion, ship, ssion.

For example: news, economy, business, mail, information, hair, paste, freedom, traffic, childhood, snow, peace, work, ice, light, oil, luxury, friendship, behaviour, money, sugar, furniture, honey, weather, luggage, china, rice, sand, grass, glass, baggage, jewellery, permission, paint, cash, blood, meat, butter, bread, wealth, anger, travel, hope, gold, silver, soup, soap, chalk, fame = glory, fruit, dirt, food, coal, ink, cotton, gas, jam, patience, harm, cheese, advice, flu, progress, charity, knowledge, help, sadness, courage, luck, amusement, flour, music, cloth, dust, draughts, paradise, paper, pepper, love, fog, joy, rubbish = trush, mustard, porridge, mutton, linen, compote, rest...

All uncountable nouns are only in the singular, so we don't put the article a, an before them.

All uncountable nouns can be replaced with the pronoun it.