3 5.R6 Try to answer the questions. Listen and read the text and check your answers. 1 How many types of birds are there in the world?
2 Where do they live?
3 What do they eat?
4 Why are birds important?

1. by 8 o'clock they will have had dinner. 2. by the end of the week he will have finished the translation. 3. before you come i will have done all the work. 4. she will have looked through the article by 12 o'clock. 5. they  will have  received our letter by monday. 6. by the time we get to the forest the rain  will have  stopped. 7. i think he  will have  answered the letter by this time. 8. we  will begin to work after we read all the instructions. 9. we will not do anything until he takes necessary steps. 10. the committee  will have  prepared the plan by tomorrow. 11.i suppose when my letter reaches you  will have already  returned from your voyage. 12. he will pass an exam after he learns all the material. 13. i am afraid they will not have discussed all the questions by the time they come. 14. we will not be able to start the experiment before we obtain the necessary data. 15. the secretary will have already looked through all the papers before the boss comes. 16. my train will have left by the time you come to the station.