—Whose schoolbag is this?—It ___________ be Mary’s. It has her name on it.
Swimming is _______ fun in _______ summer.
—I like reading books. —_________ It’s great fun.
—_____________ does it ____________ you to ride bikes to the club? —About thirty minutes.
On the wall ______________ a picture.
找出划线部分字母读音与其它不同的选项。