Each of the students working hard at his or her lessons to go to university.A. hopeB. hope

问题补充：

Each of the students，working hard at his or her lessons，to go to university.

A. hope

B. hopes

C. hoping

D. hoped

答案：

A. hope

(答案→)B. hopes

C. hoping

D. hoped

解析：working hard at his or her lessons是现在分词作定语，这个句子主语是Each of the students，且是一般现在时，故选B。