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Dear Ms. Green,
I was very concerned when I received your letter of yesterday complaining that the central heating system in your new house had not been completed by the date promised.
On referring to our earlier correspondence I find that I had mistakened the date for completion. The fault is entirely mine and I deeply regret that it should have occurred.
I realize the inconvenience our oversight must be causing you and will do everything possible to avoid any further delay. I have already given instructions for the work to have priority and the engineers working on the job to be placed on overtime. These arrangements should see the installation completed by next weekend.
Yours faithfully,
William Bosh

Why was the. fault made Because of the mistaking of the{{U}} {{/U}}.

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What did Ms. Green complain about in her letter yesterday She complained about the{{U}}

[单项选择]Markets are typically very efficient when it comes to reacting to changed circumstances. But the housing market is unique. It takes a long time to build homes, and they are expensive. It’s not like you can just order up another batch quickly from China when you sense the market turning. Apartment and condominium projects, which are in high demand, take years to build. Many of the aggressive builders and lenders went bust in 2008 and 2009. And the survivors have remained cautious, with good reason.
Realtors always tell clients that they should make an offer today because the house might not be there tomorrow. In recent years, that ancient sales tactic has been easy to dismiss as baloney. Today, it’s likely to be true.
That’s right. After years of a painful oversupply following the housing crash, it appears we now actually have too few houses on the market. This was the real news lurking behind the latest housing numbers, released Tuesday by the National Association of Realtors
A. The inventory is slow to change.
B. Houses are expensive.
C. Houses take years to build.
D. Both B and C．

[填空题]Many people can remember feeling very lonely when we were ________6 The feeling of loneliness is very difficult to____________________7 In order to survive, we all put on a______________________________8 It is easy to get the feeling that everyone except you is making a full, rich and busy life in_______________________9 Your destination is less__________________________________________10