Your friends are going to Hong Kong soon. You want to know where they’re going to stay. You ask: Where are you going to stay when
you're in Hong Kong / go to Hong Kong?
You want to sell your car. Mark is interested in buying it, but he hasn’t decided yet. You ask: Let me know as soon as
you decide / you've decided
You and a friend want to go out, but it’s raining hard. You don’t want to get wet. You say: Let’s wait until
it stops raining
Someone you know has been very rude to you. You want her to apologise. You say (to someone else): I won’t speak to her until
she apologies / she's apologised
You’re visiting a friend. It’s going to get dark soon, and you want to leave before that. You ask: I’d better go now before
it gets dark
The traffic is bad in your town, but they are going to build a new road. You say: I think things will be better when they
build / 've built