11.(A). He should have phoned to tell me about the exam.

　　(B). I wish he would delay the exam.

　　(C).There will be an exam if he comes.

　　(D). He should have mailed the exam results.

　　12.(A). I had the alarm set to go off at eleven.

　　(B). I had finished fixing Jack’s radio by eleven.

　　(C). Jack’s clock radio is designed to turn off automatically.

　　(D). Jack has agreed to have the radio off by eleven.

　　答案与音频文本：

　　BD

　　11. If only he’d postpone the exam.

　　12. I made Jack agree to turn off the radio by 11 o’clock.