Question

His parents were teachers in that school, _______ lost their lives in order to save
their students in the earthquake.  

A．none of them

B．both of them

C．none of whom

D．both of whom

Answer 1

D

試題分析：經(jīng)過分析，可知這個句子中包含一個非限制性定語從句。Them不能引導(dǎo)定語從句，又因?yàn)镠is parents是兩個人，表示兩者故用both。
點(diǎn)評：分析清楚句子結(jié)構(gòu)是關(guān)鍵，根據(jù)關(guān)系詞在從句中所作的成分以及含義，選擇正確的關(guān)系詞。