Are you going to the important party —Yes. And anybody who will attend it should formally.

下列各句中，没有语病的一句是（ ）

I wonder how much you charge for your services．— The first two are free _______the third costs $30．

The rescue team was________the village in order to save the people trapped in the coal mine. [ ]

owed the visitors around the museum, the construction _____had taken more than three years.