Question

I was walking along the road _____ someone patted me on the shoulder from behind.

A．while

B．immediately

C．when

D．the moment

Answer 1

C               

             
試題分析：考查連詞。A當。。時候B一。。就C 當。。時候 D 一。。就。句意 當我在散步時這時有個人從后面拍了我的肩膀。考查固定結構 be doing when。。。正在做某事這時。。。，故選C項。         
考點 :考查連詞。