2. romeo is portrayed as fickle. explain how this is shown in the play

This is definitely true, I would focus on how hasty romeo is.
The main point is where he sees Juliet at the party and says 'did my heart love till now?'. This comes right after his long petarchan soliloquy which focuses on his mourning over losing Rosaline.
He spends a whole scene moping over her, but the moment he sees Juliet he has forgotten all about her. This is just one example of his fickle tenancies, and makes the reader question whether he ever loved or was it all just lust?
Another example is that in the first scene he discusses his hatred for violence, yet after mercutios death he murders tybalt without haste. Romeo becomes increasingly fickle and unpredictable as the play progresses.

The man thinks she's the lady he's trying to find. she then lifts the veil and he announces that he'd made a mistake and that he'd thought she was the woman, but had been wrong. truthfully, though, he'd been right. this reveals that the he didnt recognize her (though he said he would recognize her voice or her build) and that he's still looking for the girl. he doesnt find the woman appealing or attractive, and is more or less disgusted by her appearance. he didn't understand what the lady meant when she told him the story about her "friend"