—Where _____ your food?—I only have two hamburgers. They ____ on the table.

Listening attentively in class and reviewing in time _______ a sure way to improve your learning, and this is especially true _______ it comes to standard tests.

As for the accident this time, I think it is Richard         you,        to blame.

Between the two lectures _____ a break, _______ the audience can buy ice cream. 

_______ good for our health.