--- Didn’t your brother ________ go to school by bike? --- Yes, he did. But he ________ walking to school now.
—I can’t decide ______. —You mean the purple sweater or the blue one?
—Why do you always watch Channel 10 instead of Channel 5, Grandpa? —The programs on Channel 10 are ______ better.
—Jim, Tom is looking for his English book. Is this ______? —No, that is______. I don’t know wherehisis.
—Lucy, do you like ______? —Yes. Most of my clothes are ______.
—What’s ______ most useful invention in the 20th century? —______ computer, I think.