观察下面的句子，找出句子中的先行词和引导词(即关系词)，并指出引导词在句子中作什么成分(主语、宾语还是表语)。最后，将句子译成汉语。
Fruit trees which once grew only in China can be found in many parts of the world．
先行词：________ 关系代词：________
关系代词在从句中作________
译文：________________
The boy whom the teacher often praises is their monitor．
This is the stranger who helped us yesterday．
选择与end有关的合适的词组完成句子
Guangzhou is ________ this railway line．
The young man has spent as much time as he could doing the experiments．No wonder he succeeded ________．
Most plural nouns in English ________“s”．
Study hard and you might ________ a higher score．
完成句子
我大部分的注意力被他说话时脸上的表情所吸引。
Most of my attention ________ ________ ________ the expression on his face when he was speaking．
他根本没有周密地留意到计划的细节。
He did not ________ any ________ ________ ________ these details of the plan．
根据汉语完成句子
地板得清洗了。
The floor ________ ________．