The bridge ______ two years ago. 

I _______ here two years ago．

More than 30 years ago, （）that the region was rich in natural resources。

It was about 600 years ago （） the first clockwith a face and an hour hand was made.

The museum（）we visited last Saturday was set up twenty years ago.

Our factory is much more productive now. This year’s production is five times as much （） it was ten years ago.

Over the course of a year, a certain house appreciated in value by 10 percent while the house next door decreased in value by 10 percent as a result of foundation damage. At the end of the year, the reduced price of the second house was what percentage of the increased price of the first house?　　(1) The amount by which the first house increased in value was half as much as the amount by which the second house decreased in value.　　(2) At the end of the year, the second house was worth $70,000 more than the first house.

She walked slowly away, and he waited until she was out of（）before going back into the house.

Hundreds of years ago there was a war between _____.

—So ______ ?　　—Well,she examined me. She put a thermometer in my mouth and took my temperature. She said it was normal.

The （）of this recipe (烹饪法) was made public one year after it was put into the market.