––Tomisneverlateforwork.Whyisheabsenttoday?––Something...

問題詳情：

 –– Tom is never late for work. Why is he absent today?

–– Something __________ to him.

A. must happen                          B. should have happened

C. could have happened               D. must have happened

【回答】

D

知識點：虛擬語氣與情態動詞

題型：選擇題