---Mom, I have passed the admission examinations! --- ______!
It was so dark that he ______.
Next Sunday is Thanksgiving Day.Have you got any idea _____ we celebrate it?
We are a little worried because we _____ the ground as a leader in the field of IT with the others speeding up development.
Jack is preparing for the IELTS, so he has to_____ his visit to Beijing.
With some books badly needed _____, she went to the bookstore hurriedly.