There are several factors _______ in the economy _______ make it difficult to predict the future.
John, look at the time. ______ you play the piano at such a late hour ?
Tom, you _____ leave all you clothes on the floor like this !
I have lost one of my gloves. I _____ it somewhere.
A left –luggage office is a place where bags _____ be left for a short time, especially at a railway station.
— The room is so dirty. _____ we clean it ?— Of course.