改错题。 Tosspot consists of a short passage. In this

改错题。 Tosspot consists of a short passage. In this passage, there are altogether 10 mistakes one in each numbered line. You may have to change a word, add a word or delete a word. If you change a word, cross it out and write the correct word in the corresponding blank. If you add a word, put an insertion mark (A) in the correct place and write the missing word in the blank. If you delete a word, cross it out and be sure to put a slash in the blank.