It is true that at times the U.S.A. has experienced periods of _______ unemployment as well as labor shortages.A. available B. acuteC. accessible D. ashamed
—Have you been to the Great Wall? —Perhaps not in my memory. ________, it might have been during my early childhood.
The question that puzzled them is ____ they can get rid of the air pollution in the area.
Teachers have to constantly update their knowledge in order to maintain their professional _____.
“I don’t think it’s my _______ that the TV blew up. I just turned it on. That’s all.” said the boy.
—Hi, Monica. Have you made up your mind yet? —Well, _______. I think I’m going to take up hairdressing.