It is worth considering what makes “convenience” foods so popular, and ______ better ones of your own.
American English has changed ________ time. There are several reasons ________ this.
He prefers to die rather than ________ to his enemies.
________ you understand the rule, you’ll find English easy to learn.
—Why, this is Henry speaking. —Oh, I’m sorry. I didn’t ________ your voice on the phone.
He spoke about the country as if he had been there, but ________ he had never.