2- prep dialogues

1-     Complete the following dialogue  

Sayed is interviewing a dentist.

Sayed : (1)............................... did you first want to be a dentist?
Dentist : I first wanted to be a dentist ten years (2) ................when I was at school.
Sayed : (3).......................... have you been working at this clinic?
Dentist : I have (4)................................... working here for about two years.
Sayed : Thank you very much, sir.

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Ahmed : What ..(1)…………….. I do before exams?

Father : You should ..(2)…………….. your lessons ?

Ahmed: What …(3)...…………  of food should I eat.

Father : You should eat..(4) ………….. food .

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