Jack

I've/ I set that trap because I knew they were going to fall for it.

I gave it to you so you could/can brush up on your knowledge.

Why didn't you pick a movie for us to watch?

I tried but I couldn't because my movie list has disappeared. HAS disappeared or HAD?

I was doing a past perfect/simple quiz at UsingEnglish.com and ran across a question "She told me she _____ a long time ago". It was a multiple choice quiz and I could choose between: had done, did and both. I instinctively opted for "had done" but when I saw the results, it said it was incorrect. Could this be some sort of mistake? This is obviously reported speech, so how is "did" correct?

I've taken my monitor to a repair shop and told them to fix it as fast as they can. They've replied with a yes.

OR

I took my monitor to a repair shop and told them to fix it as fast as they could. They replied with a yes.

He said:"When I saw them, they were playing tennis"

Maybe: He said that they had been playing tennis when he had seen them?

People _________ (have) holidays on the moon in the future.

Will have/ are going to have/ will be having

I m 18 years old and and almost half a year ago, I noticed that my hair had started getting oily hours after washing it. I.e, if I wash my hair at 10 am, it ll already be oily by the time I go to bed. I ve been washing my hair every 2 days since forever and this only started happening recently. My face also started getting immensely oily around the same time. I have to wash it every 1-2 h since it drives me nuts. Could this be some sort of late puberty hormone change? I hope this won t last forever.. lol

Ok so I'm a guy and I've been growing my hair out for almost 2 years now and I've started to notice these little hairs all over my head. They are much shorter than the rest of my hair and won't go down no matter what I do. I don't iron my hair, I don't dye my hair, I don't use products except for my shampoo and conditioner. Are those little flyaways going to grow and blend in with the rest of my hair or what?

I didn t want to come off as someone who can t keep his promises. Should I use "can t" here or "couldn t" because the sentence is set in the past?

"I didn't even know what it looks/looked like"

Hadn't he known that prior to his asking you?

"Don't you just hate it when you're walking down the street and someone whistles at you?"

"I've heard the song somewhere so I had to find out its name somehow."

I've always felt like I was going to die young.

I've forgotten how much the ticket costs

I forgot how much the ticket cost.

Which would be better to use as a statement? Can I use both if I just want to express that I forgot the price of the ticket?

They've attacked me but they didn't activate my traps.

They attacked me but they didn't activate my traps. Can I use "didn't" in the first one because of the present perfect?

I knew that the thing you had/have bought wouldn't work! Which one is correct?

I'm at that point in life where I'd take any woman that comes/came up to me. If it's "came", please explain why.

I only feel happy when I'm talking to you / When I talk to you