Will those ____the children from abroad come to the headmaster’s office?

--- I usually go there by train. --- Why not _______ by boat for a change? 

“Where have you been? We thought that you were lost!” mother said angrily, _________ to Lily.

—Do you have anything more ___, sir?   —Not at the moment. Have a rest then.

When he ______the door, he found his keys were nowhere.