I called you at 4:00 yesterday afternoon, but no one answered.—Sorry, I ______ with my friends at that time.

Han Han is a popular writer. His new book will ______ this September.

Do you know when Jim _________?—I don’t know. As soon as he, I will call you.

I think _______ our duty to keep our environment clean and tidy.

________ you ________ the TV play My Ugly Mother?—Yes, it’s well worth seeing. It’s so moving that I’ve seen it twice.