—David,howoldisyourbrotherthisyear?—

問題詳情：

—David, how old is your brother this year?

—___________. And we just had a party for his __________ birthday last weekend.

   A．Twentieth; twenty                                B．Twenty; twenty     

C．Twenty; twentieth                                 D．Twentieth; twentieth

【回答】

C

知識點：數詞

題型：選擇題