【小题1】There are usually a lot of customers (顾客) in the KFC.
【小题2】Our boss could have sold more goods if he had promised to offer a 40% discount (折扣).
【小题3】It is unbelievable (难以置信的)that he has finished it in such a short time.
【小题4】A large amount (数量)of money is spent on advertisement every year.
【小题5】She is so fat that she has made up her mind to go on a diet （节食） to lose weight.
【小题6】Be a little patience (耐心).I will be ready in a few minutes.
【小题7】In order to keep his money safe, he opened an account (账户)with the bank.
【小题8】On his arrival ,（到达） he was greatly weled by his fans.
【小题9】Time is limited （有限的）We need to be hurry.
【小题10】Wu must keep the balance （平衡）of nature.
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解析：
【小题1】本句的含义为在肯德基通常有许多的顾客，故本句空格处填顾客的复数形式customers。
【小题2】本句的含义为如果我们的老板承诺提供40%的折扣，他将会卖掉更多的产品，故本句空格处填折扣的单词discount。
【小题3】本句的含义为他在这么短的时间内完成令人难以置信，故本句空格处填难以置信的单词unbelievable。
【小题4】本句的含义为每年在广告上要花费大量的金钱，a large amount of修饰不可数名词表示大量的含义，故本句空格处填amount。
【小题5】本句的含义为她决定节食来减肥，故本句空格处填饮食的单词diet。
【小题6】a little修饰不可数名词耐心的单词patience。
【小题7】本句的含义为他在银行开了一个账户，故本句空格处填账户的单词account。
【小题8】介词on后使用到达的名词形式arrival。
【小题9】本句的含义为时间是有限的，我们需要快点，故本句空格处填有限的单词limited。【小题10】本句的含义为我们需要保持自然的平衡，故本句空格处填平衡的名词形式balance。