1,Enough of it!No one here thinks what you are saying should make any sence.
住口!这里没有人会认为你说的话有道理.
2,They were working in the potato field When the rain poured down.
当大于倾盆的时候,他们正在土豆田地里劳作.
3,One of the advantages of living on the top floor of a highrise building is that you can get a good view.
a highrise building是高层建筑的意思：住在高层建筑顶层的一个好处就是你可以一观全景.
4,Shelly had prepared carefully for the biology examination ,so that she could be sure of passing it at the first attempt.
Shelly已经认真准备了这次生物考试,以便保证一次通过（这次考试）.
5,To send me to a key college is my parents' big commitment.
a key college是名牌大学或者重点大学的意思
把我送到名牌大学（深造）是父母的一大心愿.
6,Don't mention that at the beginning of the story ,or it make give away the shocking ending.
这里的make可能应该是may,怀疑是拼写错误：
不要在故事的开头提及那件事,否则（你将）会泄漏故事的意外结局.
7,York,which I visit last year ,is a nice old city.
在这句话中York是visit的宾语,所以使用which.注意这里应该是visited.
8,有关sometime 和some time区别,我建议你看一下这个帖子：
我在最后也将作以解释.
9,Well,where else could they live in such comfort.
那么,还有什么地方能够让他们生活如此舒服呢?
10,Given time ,he'll make a first-class tennis player.
只要有足够的时间,他将会成为一名一流的网球运动员.这里Given time相当于If he were given time.
下面我解释问题8：
有一本名为《Common Errors in English》的英语参考书对sometime和some time等词汇的用法进行了分析,下面我翻译过来,以期起到抛砖引玉的作用.
当使用sometime这种形式时,意思是指将来比较模糊的、不确定的一段时间,例如Let's get together sometime（将来有时间我们一起聚一聚）.“Some time”用在这种场合下本身没有错,但是相对而言,它是指更为具体的时间,例如Choose some time that fits in your schedule（根据你的安排,找一些时间）.这句话“some”是用来修饰“time”的.类似地,我们也就知道“someday”和“some day”的用法了.
英语原文：
"Let's get together sometime." When you use the one-word form,it suggests some indefinite time in the future."Some time" is not wrong in this sort of context,but it is required when being more specific:"Choose some time that fits in your schedule." "Some" is an adjective here modifying "time." The same pattern applies to "someday" (vague) and "some day" (specific).
参考网址：http://www.wsu.edu/~brians/errors/sometime.html
相关链接：http://www.wsu.edu/~brians/errors/errors.html#errors