______ returning home, she found a note _________ to the door, reading: “Call in later.”

Did you notice anyone _________ the house

将下列句子填入语段的画线处，顺序最恰当的一项是。（ ）但是，没有人会喜欢只有灰色的世界。__________________，多彩保证了活力，而灰色提升着品位。这也就是和谐。①这世界充满生命活力，姹紫嫣红，千姿百态，万类霜天竞自由。②灰色也只有在和其他色彩搭配时，才能显示它的普适性，显示它的高贵和纯粹。③也正因为有了思想的高贵、纯粹，纷繁的世界才不至于俗不可耐。④正因为有了生活的五彩缤纷，理论的灰色才不显得死寂；⑤因此，灰色又必须链接多彩的世界。

In that school, English is compulsory for all students, but French and Russian are .

His wife left him, because he was in such heavy debt _________ he could never __________.