TotakeanumbrellabeforegoingoutseemedtoLondonersacommon...

問題詳情：

 To take an umbrella before going out seemed to Londoners a common practice _______, even on rain-free days.

A. to never break     B. never to have broken C. never to be broken  D. never broken

【回答】

C

知識點：非謂語動詞

題型：選擇題