短文填空：用所给词的适当形式填空,使短文完整正确，每个单词限用一次.
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Every morning, kids from a high school are working hard. They are _1_ and selling special coffee at a coffee shop. They are also making a lot of money.
These students can make up to nine _2_ dollars a day. They are selling their special coffee to airplane passengers. After the students get paid, the _3_ of the money goes to a local youth project.
These high school students use a space in the Oakland airport. It is _4_ very crowded. Many people who _5_ on the planes like to drink the special coffee.
One customer _6_that the coffee costs a lot but it is good and worth it. Most customers are pleasant but some are unhappy. _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 _8_ to run a business. Many of the students enjoy the work _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 _10_ are made. The most common mistake is forgetting to add the coffee.21教