—Is this maths problem ___________?—Yes, I can work it out ___________.
— Are you free this Sunday?— Yes, I am. I have ________ to do.
The Great Wall is famous lots of visitors all over the world come to visit it every year.
--- May I speak to Robert?---- _________ .
—What a nice watch! When you it?—Three days ago.
--- ______________________________?---- He is of medium build and has straight hair.