Mary, could you tell me if your mother_____ our school sports meeting tomorrow–I think she will come to school if she_____ free.

He told me that he had mailed part of the samples样本 and that the rest _____ in a few days.

_______ you play tennis—Yes, and I’m a good player.

My mother is ill. I _______ stay at home to take care of her.

He did not regret saying what he did but felt that he _____it differently. [ ]