1. Put the verbs in brackets in the correct form.

 1.         If you (lose) ____________________ some of your luggage, enquire at the lost property office.

2.         If you (not meet) ____________________by friends at the airport, you should proceed to the air terminal. (Passive)

3.         If you (require) ____________________ to do so, it (show) ____________________ in your passport endorsement. (Both passive)

4.         In lodgings, your landlady (be)____________________ glad if you help to keep your part of the house clean and tidy.

5.         If there is a gas fire in your bedroom, (make)____________________ sure the gas tap is turned off before you go to bed.

6.         If you (wish) ____________________ to stay longer than the time allowed, you (can) ____________________ apply to do so by writing to the Under Secretary of State Home Office.

7.         If you (know) ____________________ you will return late she (can)  ____________________  give you a key.

8.         You (may) ____________________ have to do most of your own housework if you (live) ____________________in a flat.

9.         If it (be)____________________ necessary, (buy) ____________________ a hot water bottle to warm the sheets.

 

2. Fill the blanks with IF or UNLESS.

1. I won't speak English______________I go to England.

2. _______________ you don't tell me the truth I'll never know it.

3. I'll never know it__________________you tell me the truth.

4. ________________you do not pay attention you will not learn English.

5. ________________you pay attention you will not learn English.

6. Don't open the door_________________ you know who is ringing the bell.

7. Don't open the door_________________ you don't know who is ringing the bell.

 

3. Finish the sentences, taking care to use the correct tenses.

 1. If he had taken my advice             

2. If you ate less                 

3. We'll send for the doctor if                       

4. If she practised more

5. If there isn't enough wine in this bottle        

6. If you had checked the petrol before we started       

7. This clock wouldn't have run down if      

8. Try on the blue one if       

9. If these gates are locked       

10.If we leave before breakfast         

11.If the river rises any higher

12.Her life might have been saved if   

13.If the volcano starts erupting           

14.The grass would look better if           

15.Unless it is a nice day          

16.If you don't put enough stamps on a letter, the person who gets it              

17.He would lend it to you if 

18.Unless this hotel gets another cook   

19.If the storm becomes worse                       

20.If your uncle sees you          

21.If you tried to climb it without a guide

22.If you don't shake the camera so much, your photographs    

23.I'd have brought my coat                

24.If he cut his hair more often

25.He would have given her diamonds if      

26.If you had asked his permission       

27.If the fire had been noticed earlier  

28.If you had any sense        

29.You would have been angry if