. Please remain __________ until the plane has come to a complete stop.

---The last one ______ pays the bill.--- Agreed.

It is clear that your ____ English will greatly improve if you can practice ____ wherever you can.

"We can't go out to play football in this rainy weather," said Bob, ________ out of the window disappointed.

The witnesses ________ by the police just now gave very different descriptions of the fight.                                                             (2013·陕西，14)