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It is said that the history of Oxford University can date back to 13th century.

A successful commodity caters for the requirement of its customers.

As far as I can see, in every February, Shanghai is a little warmer than London.

At the end of the novel, he was no longer paying for his costly housing loan every month.

As the reform and opening-up continuously deepen, there have been a number of Chinese tourists going to England for tourism.

1. It is said that the history of Oxford University can be dated back to the 13th century.

2. Successfull commodities can cater for the demands of people.

3. As far as I know, in February every year, Shanghai is warmer than London.

4. At the end of the novel, he could no longer pay for the expensive house loan.

5. With the deepening of the reform and opening-up policy, every year a number of Chinese tourists travel to Britain.

1. It is said （that） the history of Oxford University can be dated back to（去掉the）13th century。

2. Successfull commodities can （could）meet the demand。

3. As far as I know, Shanghai is warmer than London in February。

4. At the end of the novel, he no longer paid （pays）  the expensive mortgage。

5. A number of Chinese tourists travel to Britain every year，because of the opening policy and deepening of the reform。