写出下列单词的单数或复数。9′
(1)plane
(2)peach
(3)I
(4)they
(5)this
(6)bus
(7)bikes
(8)those
(9)you
写出下列单词的单数或复数。9′
(1)plane
(2)peach
(3)I
(4)they
(5)this
(6)bus
(7)bikes
(8)those
(9)you