—You see, I’m poor in maths, you are not good at English, and... — That’s ____ we should help each other.
—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.