问题
选择题
-- Have you seen _______pen? I left it here this morning．
--Is it _______black one? I think I saw it somewhere．[ ]
A．a,the
B．the,the
C．the,a
D．a,a
答案
答案：D
搜题请搜索小程序“爱下问搜题”
-- Have you seen _______pen? I left it here this morning．
--Is it _______black one? I think I saw it somewhere．[ ]
A．a,the
B．the,the
C．the,a
D．a,a
答案：D
2H2↑+O2↑