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For different occasions young people dress differently or are supposed to do so. Read the letter of a teenage boy to the Early Times newspaper and a few replies to his letter.
Fill in the gaps with the appropriate forms of the verbs (Past Simple or would). Put commas where necessary. There is an example for you at the beginning (0).

I was invited to a dinner party recently. I thought it would be okay to dress casually. So I wore jeans and a sweater, when I got there all the quests were dressed up and I felt really left out. What would you advise?
If I (to be invited) to my friend's dinner party, I (to think) twice what to wear.
If I was/were invited to my friend's dinner party. I would think twice about what to wear.

1If my friend Emmie (to ask) me to come to her birthday party, I (to ask) her how to dress.
2My friend (to feel upset) if I (Jo come) to his party wearing something casual.
3I never (to dress) casually if a party (to be organised) in a club.
4 If my friend (to come) to my party in jeans, I (not to take any notice).
5 My friend (to go) home and change her clothes if she (not to be dressed) in a proper way.