【单选题】What's the meaning of "stubborn" in this sentence: " John is as stubborn as a mule and nobody can prevent him from doing things once he has made up his mind."
【简答题】Please choose the proper words for each phrase. hare horse snail mouse bee mule as busy as a ______ as slow as a ______ as stubborn as a ______ as timid as a _____ as strong as a _____ as po...