Have you seen Mr. Black these days, Jack? —-Yes, I met him when I ________ in the street yesterday.

In order to let more people pay attention to their plan, they _________ some signs on the wall.

If you like, you can have some fish or chicken _____ lunch.[ ]

All the cups are made of glass ______ the green one. It’s made of metal. [ ]

Some students are so ______ that they often make mistakes in their homework.