Mr. Smith didn’t understand _____ made his son so upset that evening.
Wang Gang is considering buying a computer, is considered to be a great help in our work and study.
Most parents are not __________ the danger of their babies’ eating jelly, which causes most unfortunate incidents to happen.
Don’t turn the room __________, as I have just tidied it.
Please post this letter in the post office nearby, and __________, I will get two tickets in the train station.
I was scared _______ when I saw the tiger jumped out of the cage and ran to the little child.