You look a bit worried .—-It’s raining , but I ________my umbrella at home .

.Many wild animals in the world _____ , so we must take measures to protect them

The frozen waterfall has attracted floods of tourists to ____ the natural beauty.

I’ve been working for over twenty years and seldom so tired as now .

. —When shall we meet again? —Make it any day you like; it’s all ___ to me.