Question

5. (2015 .北京昌平二模) 一Do you know ?

    —Many years ago,I guess.

   A. when did they build the hospital 

   B. when they built the hospital

   C. when do they build the hospital 

   D. when they build the hospital

Answer 1

5. B解析：考查宾语从句。从时态 (应用一般过去时）考虑排除C和

从语序（应用陈述语序）考虑排 除A。