从方框选择适当的词并用其正确形式填空。

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Every morning, kids from a high school are working hard. They are __小题1:__ and selling special coffee at a coffee shop. They are also making a lot of money.
These students can make up to nine__小题2:__ dollars a day. They are selling their special coffee to airplane passengers. After the students get paid, the _小题3:__ of the money goes to a local youth project.
These high school students use a space in the Oakland airport. It is __小题4:___ very crowded. Many people who __小题5:__ on the planes like to drink the special coffee.
One customer__小题6:__that the coffee costs a lot but it is good and worth it. Most customers are pleasant but some are unhappy. __小题7:_ do not like it if the coffee cafe is not open for business.
The students earn $ 6.10 an hour. They also get school credit while they learn _小题8:__ to run a business. Many of the students enjoy the work __小题9:_ it took some time to learn how to do it.
They have to learn how to heat milk, load the pots, and add flavor. It takes some skill and sometimes __小题10:__ are made. The most common mistake is forgetting to add the coffee.