5．To my surprise，I had the vase stolen last Saturday night.

4．In return，I selected an oil painting for Jane.

3．There is no doubt that the vase belonging to me was designed in a fancy style and is a rare cultural relic.

2．Jane is a world­famous artist.

7．是否能找到它还是一个谜。(remain，mystery)

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答案：[句子翻译]　1.My good friend Jane gave me a valuable jade vase for my birthday last year.

6．警方正在努力寻找它。(search for)

5．使我吃惊的是，上周六晚上，这只花瓶被偷了。(to one’s surprise)

4．作为回报，我挑了一幅油画送给Jane。(in return，select)

3．毫无疑问，属于我的这个花瓶设计独特，是罕见的文物。(There is no doubt that，belong to，fancy style，cultural relic)

2．Jane是一位世界闻名的艺术家。(artist)