Cover Exercise 1 and correct the six mistakes below. Then look at Exercise 1 and check your answers.
1 At night, there are buses every half hour.
At night, there are buses every hour
2 There's a train every twenty minutes.
3 There's a bus every fifteen minutes.
4 There aren't any taxis at the airport.
5 A single bus ticket is six euros.
6 Areturn bus ticket is eight euros.​

1. He never liked to be a soldier, and he devoted the rest of his days growing roses.2. Lord Goring liked to say paradoxes and experienced pleasure when he didn't understand.3. She liked it when admired.4. He didn't like when he watched.5. I remember meeting him in Paris before the war.6.The witness said he did not remember to have ever before seen this man.7.Lady Chiltern I remembered that when I studied with Mrs. Chieveley.8. I don't mind when you criticize me, if this is true.9. Hope you don't mind if they talk.10. I prefer to do this work today.11.What do you prefer: to drive or to be carried in it?12. Typist is busy with urgent reprint material.13. This medicine should be kept dry.14. Sorry again, I remind you of this.15. Forgive me for not answering your letter sooner.16. "For life is worth fighting for," he thought.17.It is suggested to go to the exhibition.18. The teacher offered to write new expressions.19. He offered to cancel the meeting.20. I didn't understand why he avoids talking about it.21. After such an unpleasant scene, he avoided to be seen.22.He did not dare to go on the expedition.23. Jump here was very dangerous, you risk to break a leg.24.a) I'm surprised he's lying to you so much;b) I'm surprised he again lied to you.

1) If you invite me to your party, I will invite you to mine.

2) If it doesn't rain soon, all my flowers will die.

3) Unless Jill apologizes to the teacher, his parents will get a note about what he did in class.

4) If I had an iPad, I would have been the happiest person in the world.

5) Even if I am tired, I am eager to read a book before going to bed.

6) Unless you have a photographic memory, you would not have been able to answer this question.

7) If you look under the table, you will see a surprise!

8) If I won a lottery, I would go on a month-long vacation to Cuba.

9) Even if I'm supposed to be working by myself, I will ask my older sister for help.