—Are you sure the delegation will come to our school next week?
—____________．The head of it has just emailed me about the departure time of their flight．
A．No wonder B．Definitely not C．Don’t mention it D．You bet
—Jack, this is the third time that you have been late this week．
—Sorry, sir, but I was_____ for 15 minutes on the way here in the traffic jam．
A．held up B．put up C．taken up D．given up
．The day before yesterday John was dismissed because of his _____ attitude towards his job．
A．informal B．casual C．determined D．earnest
—Did you tell Jimmy that we’ve put off the meeting?
—No．He rushed out _____ I could say anything．
A．in case B．after C．before D．unless
．—______ I lock the lab before I go home?
—Don’t bother．I’ll check it myself later．
A．May B．Must C．Can D．Shall
．Interestingly in some parts of the world, women are expected to earn money _____ men work at home and raise their children．
A．but B．though C．because D．while
