【单选题】---I wonder why Mr. Green hasn’t showed up at the meeting yet.
A.
-I’m not sure, but he _______ in a traffic jam driving here.
【单选题】—I wonder why Mr. Brown hasn &39;t showed up at the meeting yet. —I &39; m not sure, but he ______ in a traffic jam driving here
【单选题】--I wonder why Mr. Brown hasn' t showed up at the meeting yet. --I' m not sure, but he__________ in a traffic jam driving here.
【简答题】--I wonder why Mr. Brown hasn't showed up at the meeting yet. --I' m not sure, but he ____in a traffic jam driving here. A) could be stuck B) might stuck C) might have been stuck D) must have stuck