---Themaninablacksuit

問題詳情：

---The man in a black suit _______ be our youth worker.

--- I’m sure it _______ be him. I saw him in the laboratory building some minutes ago.            

   A. must; can’t B. can; mustn’t     C. can; could  D. must; won’t

【回答】

A

知識點：情態動詞

題型：選擇題