英语中有不少单词,虽然仅仅是词尾有无“s”之差,但相互之间在意义上却不相同,可谓“形相似,意有别。”请在下面习题的空白处选一个正确的形式填空: There are many words in English. Although there are only differences between the suffixes and the “s”, they are different in meaning from each other. They can be said to be “similar in shape, different in meaning.” Please choose one in the blank of the following exercises. Fill in the form: