Young people who have got jobs may realizecollege lessons can’t be the only preparations for all of the situation _______appears in the working world.

If ____ mobile phones in class, you will have to be punished according to the school rules.[ ]

y up, I think it’s going to rain. — ______ . The skies are dark andcloudy.

My American teacher ___ GuangZhou a very beautiful city.

The performance supposed to be popular _____ to be a great disappointment after it was over.