Make past perfect sentences. I startrunning when the bus leave.
Mari notopen the gift until Aliya go.

a. 1. may i talk to you? – yes, please. 2. i can use a computer. and can you use? 3. he can`t play chess. 4. you must talk to them by yourself. 5. "you mustn`t talk a lot," said the doctor to the patient. 6. turn on the light, please, i can`t see anything. 7. this textbook needn`t to be bought, it can be got in the library. 8. could i wait for you? 9. could you stop the car for a minute? 10. you just must apologize to them and explain everything. 11. it shouldn`t be stayed there so long. 12. could i help you? 13. where's your brother? – he might be in the garden, but i'm not sure. 14. would you like a cup of tea? b. 1. they would like to get married next summer. 2. when we lived in the village, i was able to go to the forest every day. 3. i think we ought to hurry. the last bus leaves in 15 minutes. 4. children under 16 years aren`t be allowed to watch such films. 5. we have to work much because in the winter we`ll be to pass five exams. 6. i won`t be able to do it without your help.