短文填空
    Restaurant owners have to know how  ____    （make）food. They also have to know how to make money. Here are some things they ____    (learn)from scientific studies . The color red makes people hungry . Red also makes customers  ____   (eat) faster. Many fast food restaurant, therefore , have red furniture or walls. Soft colors like pink and light blue make people  ____ (relax),so they spend more time   ____   (eat) their meals. Soft lighting makes people look good , but it makes food look bad.. Loud music may be nice at first, but it soon makes people want____    (leave). Hard seats also make customers want to eat quickly and ____     (leave) . Many restaurants, especially fast food restaurants, ____   (use) this knowledge to make customers eat faster. Because customers    ____    (stay) very long, small restaurants can  ____     (serve) many people every day .