If I’m mistaken, _________ you are mistaken too.
------Don’t you believe me?------____, I’ll believe ____ you say.
------When can I see you, Mr Black? Three o’clock this afternoon?------Oh, no. I _____ a meeting then.
You have to wait till tomorrow when our manager ____ back.
E-Mail is a _____of communication and it is becoming more and more popular.A. type B. mean C. means D kind
------ What happened to you yesterday evening? Why didn’t you finish your work?------____ the lights off, we could not continue our work. As a result, we had to leave.