Can you play the piano?________.
John hasn’t come yet, I don’t know _____.
My house is about 25 _____ drive from the airport.
It’s said that the young trees along the river _____ two years ago.
---I don’t know when he will arrive.---Don’t worry. I’ll call you as soon as he _____.
Mum didn’t go to bed _____ I came back home last night.