The confrontation(对峙) off the coast of Huangyan Island can’t change the fact that it is an island ____to China.
—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.
—Look! Somebody _____ the sofa. —Well, it wasn’t me. I didn’t do it.