根据句意及首字母提示补全单词。

1. This shirt is very e_____. I can't afford it.

2. I want to c_____ one from many products.

3. Books and a_____  can help you learn English at home.

4.If you pass the f_____ examination,we will give you a present.

5. Please do not m_____ cash. Please pay for  courses by cheque.

6. English is the language of i_____ business.

7. Our program has three c_____ in business English.8.Harvard is a f_____ university in the USA.