---Why don’t we take a little break?---Didn’t we just have one?
—I feel really tired.—______.
—Can you tell the differences between these two pictures?—Differences? Oh, no. They look quite ______.
—What were you doing when we were playing basketball yesterday afternoon?—I ______ the classroom.
______ our teacher was ill,______ she still came to our class to teach us.
—Could I borrow your camera(照相机)?—______, but please give it back by Saturday.