19.（ ）

(单选题)If you suspect that the illness might be serious, you should (单选题)I’m sure that your letter will get ______ attention. They kn (单选题)Doctor Black comes from either Oxford or Cambridge. I can’t (单选题)Is this picture ______ you mentioned in your last letter? (单选题)Your answer ______ her so much that she was very ______ with (单选题)The dog seems very quiet now, but he still ______ go by. (单选题)I ______ you were here. (单选题)I found ______ very easy to learn English well if you put yo (单选题)It is generally accepted that ______ boy must learn to stand (单选题)（ ）