Finish the following dialogue with one word each:

Doctor : Hello, Eslam. What's (1).......................... with you ?

Eslam ; I (2)............................. my back.

Doctor : When did you do this ?

Eslam : It started after I (3).............................. some weights.

Doctor : Did you (4) ……… your knees and lift the weight carefully?

Eslam ; No, I didn't. I know I should have been more careful