yīn / wèi / wán / quán / bú / huì / zuò / zhè / míng / xué / shēng / zhǐ / hǎo / jiāo / bái / juàn

因为完全不会做，这名学生只好交白卷。

Since he could not do any of the questions, the student had no choice but to hand in a blank paper.