He is a hesitating man. And he is always _________everything. [ ]

The explorers failed to find the cave because it was not locatedthey had expected it to be.

Daniel, doing homework all the time makes us feel bored (无聊). What about going out for a picnic -_______.

_____we understand things has a lot to do with what we feel.

I really don’t know ________ I had my money stolen.