Jack wasn't saying anything,but the teacher smiled at him ________ he had done something very clever.(2011·湖南)
This kind of IPod _______ well in China and it is popular with students.
They have decided to build a monument ______ those who died in the great earthquake.
—Have you seen my English dictionary? —I put it right here just now, but now it’s nowhere ______.
—Can you help me download some popular songs from your computer? —_______, but I must finish typing the article first.
Thank you, Mr. Chen. I’m wondering how to ______ the great help you gave me during my study this year.