What do you mean，there are only ten tickets?There ________ be twelve.

To protect the environment, the local government has put up a lot of ______ to warn the citizens not to litter the ground.

The athlete's years of hard working________when she finally won the Olympic gold medal.

John waited until he got back his breath and could speak      .

I sent a big bunch of flowers to the nurse as an       of thanks for her taking good care of my grandpa in the nursing home.