---What did our teacher do?---He raised his arm as a(n)        for us to stop.

——Do you think I should wear a hat to the party?——It all depends on your own__________.

There is nearly five thousand dollars         of goods in the shop.

 It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.

The girl got nothing in ______ for her kindness, which made her very sad.