Ответ:
the advantages of riding a bike are the following. you can use a bike whenever you want. you don't have to pass the exam and get driving licence when you ride a bike. a bike is an environmentally friendly means of transport.
also there is a disadvantage. it takes you much time to get somewhere by bike.
1) ...have written
2) ...has not come
3) has she + 3 форма глагола draw
4) have they left
5. They went 6. They were 7. he came, had, read, began 8. returned. returned. did you go ...? I didn't, I was too 9. Did your brother returned.... . he came.
1c 2a 3d 4c 5e 6b 7a 8b 9d 10b 11d 12c 13b 14d 15e 16a 17a
18b 19 c 20b 21d 22a 23a 24c 25b