下列各组字母中全部是元音字母的是 ____。
Jim has a ______. He is going to the USA to visit his sister.
The couple ______at this time yesterday. Nobody knew when they stopped.
Millie is______ clever a girl that she has worked out _______difficult math problems.
Did your father tell you ______?
—I’m afraid that I can’t do it.—Oh, you should believe in yourself. You won’t know what you can do______ you try it.