It’s vital that the theory _____ practice, or it could just be something meaningless.

Mr Wang, could you tell me how long _______ the magazines –At most ten days.

The staff in the supermarket Father Christmas to welcome the customers on Christmas Day.

下列各句中，没有语病的一句是（ ）

Modern China is experiencing a completely new periodrespect for science and creativity has become the guiding principle of society．