Guestsandfriends,welcometoourschool.

問題詳情：

 Guests and friends, welcome to our school. ________ the meeting this morning are officials and scientists from different countries of the world.

   A. Attend             B attend             C. Attending           D. Having attended

【回答】

C

知識點：非謂語動詞

題型：選擇題