Do you have any idea _______ is actually going on in the classroom?
Let’s keep to the point or we ___________ any decisions.
In the Great Depression, the American government couldn’t find good solutions _____ the unemployment problem
In January, 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.
I spent five hours_____________ the book__________ I paid 10 dollars.
With five hungry children seated round the table, the food disappeared_____________.