—Are you coming to Jeff's party?—I'm not sure.I ________ go to the concert instead.
. ------Don’t put the waste on the ground. ------Oh, I’m very sorry. I ____ the dustbin there.
------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. meanC. meansD 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.