I like the red skirt. The ______ is that I have no money for it.A matter B question C thing D problem
Tom______half an hour doing his homework and listening to pop music ______him 20 minutes.
—Could I _______a book from you? —Of course. And you mustn’t_______ it to others.
—I’m going on a trip to Beijing. —_________!
He left home ______a cold morning, and I heard that he was coming back _____ the late afternoon.
Max often ______our books and pens ______the floor, when he ______our desks.