It won’t be long before we _____________ a way to overcome the difficulties.

It took        building supplies to contruct these energy—house . It took brains , too .

There are a lot of computers in the lab,and they need professional　　to make sure they can be in a good state.

I had intended to go on a diet, but the dishes at the party were simply impossible to _______ . 

You can't ___ possession of the house until all the papers have been signed.