— It is an hour before we can board the train. Shall we just wait here or go to have a cup of coffee?— ________.
There is _____ a pen, an eraser and some pencils in her pencil-box.
----- Is she a teacher? ------ Yes, _____.
How many _____ would you like?
----- Do you have ______ bananas? -----Yes, I have_____.
Where are his _______books?