Itissaidthatpotatochips

問題詳情：

It is said that potato chips ______by mistake about a hundred years ago.

A. invent                                                                  B. invented

C. are invented                                                          D. were invented

【回答】

D  句意：據說薯片是大約一百年前偶然被髮明的。本題考查動詞的時態和語態。由時間狀語a hundred years ago可看出句子應用一般過去時；potato chips與invent構成被動關係，故選D項。

知識點：動詞語態

題型：選擇題