Come on, boys and girls. Help ____________ to all the yummy food.

Not until he called the secretary three times ______ that the manager went to an important meeting．

He has ___________ daughter_______ Mary.

The boy said ________ couldn’t he work out the problem but his teacher didn’t know how to do it.

The Qing Dynasty (AD1616-1911) had ten emperors altogether, nine _____ are buried in the two groups of tombs in Hebei Province.