Finish the following dialogue with one word each:
Doctor : What's …(1)…………………….. with you?
Hamdy : My lungs hurt me.
Doctor : Do you …(2)…………………….. ?
Hamdy : Yes, I smoke about thirty cigarettes a day.
Doctor : Oh! No, you have to …(3)…………….. smoking at once.
Hamdy : OK, doctor, I …(4)………………… try.