19.(A). She doesn’t know how much she needs to learn.

　　(B). People have already heard of her writing.

　　(C). It’s unusual to find such a young writer.

　　(D). She doesn’t know the right people.

　　20.(A). My typewriter’s in my office.

　　(B). The paper I typed is still on my desk.

　　(C). That ribbon must have been on the left-hand side.

　　(D). I don’t have the ribbon with me.

　　答案：

　　BD

　　音频文本:

　　19. Even though she’s young for a writer, she’s not unknown.

　　20. I must have left my typewriter ribbon on my desk.