President Barack Obama is practically weepy at the thought of his daughter Malia _____ to college.

t facts,we can’t form a correct opinion,forwe need to have actual knowledge____ our thinking.

There are severalfactors _______ in the economy _______ make it difficult to predict the future.

The Curies were________the Nobel Prize for their great contributions to science.[ ]

Here’s your paycheck for this month —Ah, that’s music _____ my ears!