Jim gets up ______ 6:50 ______ the morning. (  )

A．at; at

B．at; in

C．in; in

Read and fill in the blanks（阅读短文，首字母填空）
The sea covers a great part of the Earth’s surface. It is the h【小题1】 of millions of living things. Do you know there is more life in the sea than on the l【小题2】 ? The animals and plants in the sea are very i【小题3】  to man as a resource of food. Today more and more people are studying the sea. This is because the population of the Earth is increasing so fast that the land will not be able to provide food f【小题4】 every day. And the sea can provide us with a lot of food and f【小题5】 water in the future.

There is a book ___________animals. （   ）

A．with

B．of

C．about

根据句意，从方框中选择适当的单词填空。

1. I’m waiting ____my dad’s friend.
2. He is wearing a pair ___ black shoes.
3. I have to say goodbye ____you now.
4. This is _____umbrella.
5.She needs ____vegetables.

Our teachers are very nice _____ us. （ ）

A．to

B．for

C．of

D．on