问题
选择题
—I thought Stephanie and Lee were getting married in June.
—No, that’s ________ her cousin’s wedding is.
A．where
B．when
C．why
D．how
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—I thought Stephanie and Lee were getting married in June.
—No, that’s ________ her cousin’s wedding is.
A．where
B．when
C．why
D．how
答案：B
TiO2+H2O；
TiCl4+2CO; 
Ti+2MgCl2。