—Do you often visit your friends?—________，because we are all busy with our jobs.

 —Do you regret paying ten dollars for that book?—No, I would gladly have paid ________. 

  "It’s ______ warm today, let’s go swimming."　　　　"No, I don’t ______ to do. It’s ______ cold today.

 Smallpox, a kind of disease, has now died ________.

 I thought she was African, but ______ she’s Spanish.