从方框中选择恰当的句子补全对话。

A:Where did you go last summer holiday?

B:____ 

A:Did you go there by train?

B:No. My father bought a new car. ____ 

A:Wow! That's cool. ____ 

B:We climbed the Great Wall. And we took many pictures.

A:What else did you do?

B:____ And we bought many nice presents for our friends.

A:____ 

B:On July 25th.

已知椭圆Γ： $\frac{x^2}{a^2}$ +y²=1（a＞1）的左焦点为F₁，右顶点为A₁，上顶点为B₁，过F₁，A₁，B₁三点的圆P的圆心坐标为（ $\frac{\sqrt{3}-\sqrt{2}}{2}$ ， $\frac{1-\sqrt{6}}{2}$ ）．

（Ⅰ）求椭圆的方程；

（Ⅱ）若直线l：y=kx+m（k，m为常数，k≠0）与椭圆Γ交于不同的两点M和N．

（i）当直线l过E（1，0），且 $\overrightarrow{EM}$ +2 $\overrightarrow{EN}$ = $\overrightarrow{0}$ 时，求直线l的方程；

（ii）当坐标原点O到直线l的距离为 $\frac{\sqrt{3}}{2}$ 时，求△MON面积的最大值．