Question

I’ ll never forget the day_____ the great scientist came to our school and gave us a speech.

A．that

B．which

C．when

D．where

Answer 1

C

定語從句的用法。句意：我從來不會忘記這位偉大的科學家來我們學校給我們做演講的這一天。從句中有主語，也有賓語，可判斷先行詞做狀語，表示時間用when。that和which是關系代詞，做主語或賓語；where做狀語時表示地點。故選C。