He doesn’t know ________ they will plant trees on Saturday or not.
—Look at _________ sculpture, Jack! How do you like it?—This is ________ most wonderful one I have ever seen.
-- ______ you______ your homework yet? --Yes, I _____ it just now.
Mary ________ to see the films because she __________ it twice.
His father _______ for years.
His father in this factory since he here in 1980.