阅读下面材料，在空白处填入适当的内容（每空不多于3个单词）或括号内单词的正确形式。
China's Tea Villages
In most Chinese tea villages, March is the time of year in ___小题1:___ locals start to pick and process tea. The usually quiet villages suddenly become busy centers of activity, as people take out special tools and prepare ___小题2:___ tea processing. In some villages, local residents hold traditional ceremonies, __小题3:___ (thank) heaven for its blessing. The price of tea ___小题4:___ (pick) in March is extremely high because __小题5:___ is fresh, tender and contains multiple trace elements.
China ___小题6:___ (be) famous for tea production since ancient times. Of the goods transported and traded along __小题7:___ Old Silk Road linking China to the Middle East and Europe, the importance of tea was matched only by silk. China produces Oolong, black, green, white, yellow __小题8:___ dark (aka post-fermented) tea. The Oolong, green and black __小题9:___ (vary)are most notable for their high quality.
Most of China's tea villages are found in remote mountainous areas in the country's south and southwest, __小题10:___ the beautiful scenery is often hidden under clouds.
小题1:which
小题2:for
小题3:thanking
小题4:picked
小题5:it
小题6:has been
小题7:the
小题8:and
小题9:varieties
小题10:where
题目分析：
小题1:这里含有一个介词+关系代词引导的定语从句，指物只能用which。
小题2:Prepare for是固定用法，意思是为……做准备。
小题3:“ local residents”与“thank”之间是主动关系，故用现在分词，所以填thanking。
小题4:“tea”与“pick”之间是被动关系，故用过去分词作定语。
小题5:指代“茶”，所以用it。
小题6:表示自过去某一时刻到说话时这段时间中的经历，用现在完成时。
小题7:特指古老的丝绸之路，故用定冠词the。
小题8:表示并列关系，故用and连接。
小题9:作主语，故用名词形式。
小题10:这里含有一个定语从句，且关系词在从句中作地点状语，故用关系副词where。