Why is he so happy?—He __________ the volunteeringclub and works for the old people.

_______ adequate preparations, the conferencewouldn’t have been so successful.

During the forum, Dong Qing, a famous hostess, shared her experience of creating The Reader, one of ________ purposes is to create more original entertainment.

Did you attend the meeting? — I would have known the news if I it.

g had such ________ to its masterthat it would not leave him, even when he was dead．