Be supposed to; was / were going to

Phil: They say it's going to be really warm.

Sue: Brad shouldn't eat chocolate.

Patty: I have to get up early tomorrow.

Anna: I should be working on a paper.

Patty: Jen and Martin agreed to be here by 7:00.

I intended to make a dessert, but I didn't.

Can mean "They say..." Ex: It's supposed to be a barbecue.

Can mean "Have to" or "Should" Ex: I'm supposed to work tonight.

Can mean "a contrast" Ex: I'm supposed to be studying but I'm not.

Can mean "What was expected but didn't happen" Ex: He was supposed to call me at 7:00 :(

Has a similar meaning and can also mean "intended to" Ex: He was going to give us directions but he didn't call.

I wasn't going to go to the party but my boyfriend insisted.

Do you have plans for the weekend? I heard the weather ________ (not be) very good.

I _________ (go) to a family reunion, but I'm not really looking forward to it.

Parties _______ (be) fun.

Well, I _______ ( make) 80 cupcakes. I _____ (buy) them, but my husband said that's cheating.