MumtriedtopersuadeDadnottosmoke,buthejust

問題詳情：

 Mum tried to persuade Dad not to smoke, but he just ______ listen.

A. wouldn't                 B. couldn't                    C. shouldn't                  D. mustn't

【回答】

A  

知識點：虛擬語氣與情態動詞

題型：選擇題