I don’t know whether you happen ____ it, but I’m going to study in the U.S.A. this September. A. to be heard B. to be hearing C. to hear D. to have heard
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.