The police are looking into the cause which ________ the sinking of the ship with about 200 passengers aboard.
---How do you ___ the picnic? ---It's wonderful.
Is there enough time ___ now? Yes, take it easy.
I ___ get on the bus when I heard someone calling me from behind.’
See the clouds! It ___ rain.
The air holds the feather back more than it ___ the stone.