他们学习十分努力。的确如此。

They study very hard. -so they do.

youdao

他说：“他们聪明，乐于学习，工作努力且十分谦虚。”

"They are smart, willing to learn, work hard, and are modest," he said.

youdao

他说：“他们聪明，乐于学习，工作努力且十分谦虚。”

"They are smart, willing to learn, work hard, and are modest," he said.

youdao