As you know, Barack Hussein Obama Jr. __________ in January 2009.
Don’t worry .The food _______us three days .
To succeed in doing an experiment,________.
Wang Fang ,for ____a correct way will help communicate __others in a foreign country .
----When shall we start ? ----Let’s_______it 8:30. Is that all right ?
Be careful when you cross this very busy street.If not ,you may _____run over by a car .