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Put the verb into the correct form: present perfect or past simple.

I) My bicycle isn’t here any more. Somebody ... (take) it. 2) I ... (not / eat) anything yesterday because I ... (not / feel) hungry. 3) I just ... (return) from Yalta. - You … (go) there alone? - Together with my son. - How long you … (stay) there? - Three weeks. 4) Your hair looks different. You (have) a haircut? - Yes. - You ... (cut) it yourself? -No, Ann ... (cut) it for me. 5) Look! Somebody ... (spill) milk on the carpet. Well, it … (not/be) me. 6) You ... (see) the film on television last night? 7) … (you / see) your friend this week?