American English has changed ________ time. There are several reasons ________ this.
A. over; for B. for; with C. in; of D. during; about
He prefers to die rather than ________ to his enemies.
A. give up B. give out C. give in D. give off
________ you understand the rule, you’ll find English easy to learn.
A. As B. While C. Once D. Whether
—Why, this is Henry speaking.
—Oh, I’m sorry. I didn’t ________ your voice on the phone.
A. recognize B. realize C. know D. hear
He spoke about the country as if he had been there, but ________ he had never.
A. frequently B. gradually C. actually D. finally
Her friend did everything in his ________ to help with her business.
A. energy B. power C. strength D. force
