to

--It was careless of you to have left your laptop in my car last night.    --My God! _____.

--Li Yuchun, the No. 1 Supergirl, is coming to our city to sing tonight.--Wow! _____ our evening classes could be canceled.

--You seem to show an interest in cooking.--What! _____, I am getting tired of it.

 We'd better finish the work as quickly as possible. _____ seems to be little time left.

—Are you going to visit Mr. Black  or  Green tomorrow?—_______,because they won't be free until the day after tomorrow.

—I'm going to Hangzhou for a holiday this weekend.—_________you are there, can you buy me some green tea?

—Who knows the way to the airport?—_____of them knows the way to the airport.

---What a surprise! You changed your hair style. ---Yes,and another surprise. I’m going to get married next Saturday.

—I wonder what the weather is going to be like tomorrow?_______That'sa good idea.

如果整型变量c，d的值分别为6和9,则下列语句中For I=c to d step -3: Print I : Next I 循环体的执行次数是（   ）。