Who is that woman? —She is ________ mother.

Look at the boy playing basketball on the ground. Isit George?— It ________ be him. He told me he would playbasketball after class, but he’s not sure.

He _____ for two years. We are still sad about his ______.

－Don’t ________, my children. Keep working hard and you will win the match.－Thank you, Mr. Zhang. We’ll try our best.

.—Tom is ill. When shall we go to see him, on Saturday or on Sunday—_________. Either will do.