US President Barack Obama ______ for a moment, then went on with his speech.
_________ English can be difficult to learn, it is a very useful tool for communication.
Years of hard work almost made him ________________.
—What would you like to do next? Go skating?—Well,______ . I am not so skilled at it. I hate to be black and blue all over.
Crops died of drought for ____________ water.
It’s wise to handle the ____________ between nations in a peaceful way.