题目内容：

用单词的适当形式填空(单词未给出)
1.You should know your s________ and weakness before applying for a job.
2.No one has yet found the exact o________ of the universe and the earth.
3.Your composition is good except for a few f________ of spelling and grammar.

优质解答

strength
origins
faults

追问：

第二问我们老师给的答案是origin 我想问一下到底怎么写才是对的 加不加s

追答：

我觉得应该加上吧，有本书叫 origins of the universe. 不过你老师如果说不加的话，应该他把 origin 看做不可数了吧。 不是非常确定！