estimate估计

demands需求

in terms of 说到；在……方面

custom 风俗

customer 顾客

tear -- tore 撕破
only to do 不料，没想到
I tore open the box,only to discover that some papers were missing.
If the work to be completed by the end of this month is delayed,the construction company will be heavily fined.
it's hard to remember a name when one doesn't have a face to go with it .如果没见过面很难记住一个人的名字
Never before has he seen any lady who can play tennis as well as Maria.之前从来没见过
The used car I bought cost four thousandpounds.有具体的数字用单数
What's the matter with you? You look so pale.一般现在时

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