Look! There are two monkeys _____ the tree. —Oh, yes. They are eating the fruit.[ ]

Qingdao will spend about 80,000,000,000 yuan in building a bridge _____ the sea. [ ]

It’s very friendly ______ him to help me when I’m in trouble. [ ]

He didn’t study hard, so he was afraid ______ in the exam.

Alice ___watches the news round-up, so she knows little about the world.