Ever since middle school, my sister and I ________ about taking a bike trip.
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.
—Look! Somebody _____ the sofa. —Well, it wasn’t me. I didn’t do it.