1. He never (to fly) by plane . 2. We always (to take) little luggage when we travel. 3. Mary (not to buy) a ticket yet. We can't ( to fly) to Yalta. 4. I think Vinegar Witch ( to steal) all mustard seeds in Spice Country. 5. Why is your little sister (to cry). 6 You (to find) all the books in this shop. 7. You (to understand) everything. 8. Who (to make) coffee. 9. Look ! Little Nick (to fail down)

1) He has never flown by plane. 
2) We never take much luggage when we travel. 
3) Mary hasn't bought a ticket yet. We can`t  fly to Yalta. 
4) I think the Vinegar Witch has stolen all the mustard seeds in Spice country. 
5) Why is your little sister crying ? 
6) Have you found all the books in this shop? 
7) Have you understood everything? 
8) Who is making (has made) the coffee? 
9) Look! Little Nick has fallen down.