6. You can leave only when I tell you.
-> Until
7. When is John and Mary's wedding?
-> When are
8. I was drowning, but he saved me.
-> If he
9. We can't afford to buy the car.
-> The car
10. She doesn't usually stay up so late.
> She's not used ..Stay..up.so.at.e.
11. If I were you, I' ...
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