----Are Mr. and Mrs. Wang living alone in the house? ----Yes, altough they have three sons,      of them live with their parents.

--- Excuse me, is this _______ new computer? --- Yes, it’s _______. 

New Zealand has two islands. One is North Island and        is South Island.

– _________ you spell it ?      – Yes, I can. P-E-N, pen.

——Which of the two English dictionaries will you buy?——I’ll buy ________ of them, so I can give one to my friend Helen.