—Youcanhardlyimaginethepleasureofchattingwithfriendson...

問題詳情：

 —You can hardly imagine the pleasure of chatting with friends on Wechat (微信).

—Really? But it ______ cause you much trouble if someone get your personal information.

A. may                B. must           C. need            D. should

【回答】

A

知識點：情態動詞

題型：選擇題