What do you think of the report about the air pollution on TV last night?—I think the situation is so that we should take action to protect the environment.

Please join us. We need _____ actors in our play. [ ]

My grandparents have lived in a town near Nanjing . They enjoy their life in the town.

What’s this______ English?—______a pen.[ ]

Where is Mary? I’d like to have a talk with her. –She _______________the library. You can find her there.