Unit 59 May I try on this dress?我可以試穿這件服裝嗎?

Unit 59 May I try on this dress?我可以試穿這件服裝嗎?
    (This is your favorite topic.
    Not really.
    That is my favorite topic.
    Not it’s my favorite topic.
    Your favorite topic is: language.
    We do have lots of things in common.
    Like clothes shopping now)
    May I try on this dress?
    By all means./ Of course.
    May I try on your watch?
    May I try on this dress?
    May I try on this shirt?
    Of course not.
    By all means.
    Can I try on these shoes?
    Can I try on this cap?
    Can I try on this pair of ear rings?