---Whyareyousohappy?      ---

問題詳情：

---Why are you so happy?

       --- ______ the teacher’s help, I found the answer ______ the question.

A.  Under; to     B. With; to     C. Under; of    D. With; of

【回答】

B

知識點：介詞和介詞短語

題型：選擇題