Did you know that in one bat-cave, you could find___many as 20 million bats? In spite___their extraordinary numbers, bats miraculously never fly___eachspiteother!bounce back to themselves, How is this possible? Bats emit ultrasonic soundsshort, they use their ears toallowing them to judge the size and distance of objects.incredible accuracy that they can even detect a tiny"see"! Bats can achieve this withant on the ground! Notthat, but they also use their voices to sing like birds! Yet, high forunlike birds, bats sing in mostly ultrasonic frequencies that are usuallyhumans to hear. In fact, bats have some of the most intricate communication systems in the animalfound to havekingdom. They actually use their songs to talk to each other, and haveso amazedhumans. Indeed, scientistsdistinctive vocal patterns, justby bats, they believe that by studying bat-language, they could provide better treatmenthuman speech disorders.​

1) She will have to speak American English there.
2) Yes, Alice will have to go to a teacher for extra lessons to learn English better and feel more confident in America.
3) Yes, she will have to go to school.
4) Yes, she will. Alice will have to travel to school by bus almost every day exept weekends.
5) Yes. she will have to learn American history as she moves to America for a long time.
6) Yes, Alice will have to watch TV in English because there are no Russian channels in America.
7) No, she will not have to get up very early.
8) No, the next year won't be easier for Alice as moving to another country is quiet complicated.

1. What's your name? — My name is Ann.
2. What's your address? — My address is 45 Oxford Street.
3. Where are you from? — I'm from London.
4. Who is he (in this photograph?) — He is my father.
5. What is his name? — His name is John.
6. Where is he? — He is in London.
7. I am Lena and this is Nick. He is my brother. He is ten (years old) and I am twelve (years old). We are from St. Petersburg.
8. I am a pupil. I am at school.
9. My brother is a painter. He is not an engineer.
10. My sister is at work. She is a doctor.
11. He is a student.
12. Are you a student? — No, I am a doctor.
13. My sister is at home.
14. We are not at school. We are at home.
15. My brother is a pupil. He is at school.
16. Is your mother at home? — No, she is at work.
17. Is your cousin at home? — No, he is at school. He is a pupil.
18. Is your sister a teacher? — No, she is a student.
19. Is your father at work? — No, he is at home.
20. Is your sister a typist? — Yes, she is. — Is she at home? — No, she is at work.
21. My grandfather is a scientist.  
22. My mother is not a teacher. She is a doctor.