What do you think of my article, professor? —The former part is well written but _____ is just so so.

The photo of my brothers and me__________ my childhood.

I met my uncle at the airport yesterday morning , ______ he came back from abroad[ ]

How much shall I pay for the phone cell? — You _______. It’s free of charge.

下列各句中，没有语病的一句是（ ）