helppp meeeeee

Here are the answers to the given exercises using the present perfect tense or the present perfect continuous tense: 1. I'm tired. We **have been walking** for over an hour. Let's stop and rest for a while. 2. The zoo isn't far from here. I **have walked** there many times. 3. I **have written** my friends at least a dozen letters since I left home and came home. 4. Sally is writing a letter to her boyfriend. She **has been writing** it since she got home from class. It's going to be a long letter. 5. The telephone **has rung** four times in the last hour, and each time it has been for my roommate. 6. The telephone **has been ringing** for almost a minute. Why doesn't someone answer it? 7. She is 80 and she **has never read** a book in her life. 8. The secretary is very tired. She **has been typing** all morning. 9. Tom is reading a book. He started two hours ago and he is on page 53. He **has been reading** for two hours.