— We’ve never ______ astronauts’ life though we’re interested in.— Really? I’ll offer you some books about it.
—Is ________ a photo of your parents? —No, ________.
You can see my grandparents in the ________.
—Is Alice your sister? —________. My sister is Helen.
—Here ________ two pens for you, Alan. —Thanks.
—Are these girls your sisters? —No, ________ aren’t.