Why not stay at home ______ the road is so slippery after the heavy snow?

I was scared _______ when I saw the tigerjumped out of the cage and ran to the little child.

下列四种不同的表达语准确得体的一项是（ ）

Mum, ______ is my football– It’s under your bed.

er having finished mopping thefloor, he puts the mop back ______ it belonged