IV.Write the correct form or tense of the verbs in brackets.

1. has failed                                                    

2. established   

3. have they lived – moved                            

4. have finished     

5. am studying                                                

6. did you buy - bought  

7. Have you ever been - haven’t been             

8. volunteers      

9. to help                                                         

10.donating

VI.There is one mistake in each sentence. Underline and correct the mistake.

1. went → gone                                             

2. didn’t → haven’t      

3. cooker → cook                                            

4. already → yet

5. for → to  

6. donate →donating

7. recycle →to recycle 

8. lived → live

IV

1. Has failed                                                    

2. Established   

3. Have they lived – moved                            

4. Have finished     

5. Am studying                                                

6. Did you buy - bought  

7. Have you ever been - haven’t been             

8. Volunteers      

9. To help                                                         

10. Donating

VI

1. went -> gone                                             

2. didn’t -> haven’t      

3. cooker -> cook                                            

4. already -> yet

5. for -> with

6. donate -> donating

7. recycle -> to recycle 

8. lived -> live

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