---Guesswhat!Ihaveownthefirstprizeinthespeakingcompeti...

問題詳情：

 ---Guess what! I have own the first prize in the speaking competition.

  ---Congratulations! You ______ put a lot of work into it.

  A. should              B. must           C. should have     D. must have

【回答】

D

知識點：虛擬語氣與情態動詞

題型：選擇題