Excuse me, is this your school bag, Tom?<br />No, it isn't.<br />My school bag is blue.<br />Whose school bag is it?<br />It must be Sally's.<br />Her name is on it.<br />Excuse me, is this your school bag, Tom?<br />No, it isn't.<br />My school bag is blue.<br />Whose school bag is it?<br />It must be Sally's.<br />Her name is on it.