选出下列字母中含有括号内元音的一项。
E.( )[a:] ①I ②D ③G ④R
—How’s it going with you, Helen? —_______ .
------____________? ------He has short straight hair and is of medium build.
Dave is a reporter. He works ______.
Mike is _____ eight-year-old boy. But he plays_____ guitar very well.
―Have you finished your project? ―______ It’ll take me another two days.