Только b
https://ibb.co/D47Pmt9

Present Simple, Present Con­tinuous, Present Perfect, Present Perfect Continuous.
1. This man (is) a writer. He (writes) books. He (has been writing) books since he was a young man. He has already ( written) eight books. 2. What have you (been doing) here since morning? 3. Lena is a very good girl. She always ( helps) her mother about the house. Today she (has been helping) her mother since morning. They have already ( washed) the floor and ( dusted) the furniture. Now they (are cooking) dinner together. 4. He (is running) now. He (has been running) for ten minutes without any rest. 5. What are they ( doing) now? — They (are working) in the reading room. They have (been working) there for three hours already. 6. Where is he now? — He (is) in the garden. He (is playing) volleyball with his friends. They (have been playing) since breakfast time. 7. I ( live) in St. Petersburg. I (have lived) in St. Petersburg since 1990. 8. This is the factory where my father ( works). He (has worked) here for fifteen years. 9. Have you ( found) your notebook? — No! I am still ( looking) for it. I have already (been looingk) for it for two hours, but (have not yet found) it. 10. You (have been playing) with a ball for three hours already. Go home and do your homework. 11. Wake up! You (have been sleeping) for ten hours already.
12. I (have been waiting) for a letter from my cousin for a month already, but (have not yet received) it. 13. She has already been doing her homework for two hours; but she has (not yet  done) half of it. 14.1 (have been waiting) for you since two o'clock. 15. What are you ( doing)? — I (am reading). I (have been reading) for two hours already. I have already (read) sixty pages. 16. It is difficult for me to speak about this opera as I (have not  heard) it. 17. I have just  received a letter from my granny, but I have (not yet  received) any letters from my parents. 18. The weather (is) fine today. The sun (has been shining) ever since we got up. 19. Every day I ( wind) up my watch at 10 o'clock in the evening. 20. Come along, Henry, what are you ( doing) now? I (have been waiting) for you a long time. 21. Where are your gloves ? — I (have put) them into my pock­et. 22. I (am staying) with some American friends in Chicago. I (have been staying) with them for two weeks now. I ( have had) a great time here. I (have been taking) the opportu­nity to improve my English. I have already ( seen) the towering skyscrapers of Chicago which are reflect­ed in the rippling water of Lake Michigan. I have just ( taken) a picture of Chicago's Sears Tower which (rises) 1,707 feet and ( provides) a panoramic view from the skydeck. 23. I (am going) to give that cat some food. I (am) sure it (is starving). — But Jane has already ( fed) the cat. You needn't do it.

ответ:

А: вам нравится кемпинг? Б: Да, мы часто останавливаемся на турбазе в горах. Это не рядом с пляжем, но там есть бассейн, где мы можем плавать и ... .. 2 А: вы иногда ездите за границу на каникулы? Б: Нет. Я не ездил ни в какие другие страны. 3 А: что самое длинное ты взял? Б: два года назад моя семья ездила в Москву - это больше 2000 км! Но обычно мы берем короткие s в места рядом с нашим домом. 4 A: У многих приезжают в твой город? Б: Да, многие приезжают сюда летом. Им нравится... так что знаменитый замок и Старый дворец пользуются популярностью. И они покупают их очень много ..s, чтобы забрать домой. 5 А: вы когда-нибудь путешествовали на туристическом автобусе? Б:Да, мы ездили по Берлину с А Она была очень любезна и дала нам много информации. Это было проще, чем использовать букву А чтобы найти