按照要求选单词。(10分)
( )(1)I(对应词)________
A.you B.it
( )(2)boys(单数形式)________
A.boy B.boies
( )(3)morning(对应词)________
A.afternoon B.hi
( )(4)what is(缩写形式)________
A.what's B.what're
( )(5)I'm(完整形式)________
A.I'm B.I am