Mary, along with her parents Hainan for a week and they will come back soon.

Plastic bags are provided for our convenience but they have also ___ the pollution of the environment.[ ]

So excited was the winner that he couldn’t say anyword to his feelings.

下列各句加点词没有活用现象的一项是（ ）

It’sreally difficult to ______ what he is trying to express.