问题
选择题
It is_______ he often fails in exam_______ makes his parents worried about him.
A．because, that
B．that, that
C．不填, that
D．what, that
答案
答案：B
考查主语从句和强调句型。整个句子是强调句型，所以第二空用that引导；去掉it is…that,剩下_______ he often fails in exam makes his parents worried about him.
可知_______ he often fails in exam是主语从句，且从句不缺成分，所以用that引导。选B。