问题
选择题
----Each of the students, working hard at his or her lessons,___to go to university.
-----So do I.
A．hope
B．hopes
C．hoping
D．hoped
答案
答案：B
句子的真正主语是each of the students，横线处填的hopes是句子谓语，其中的working hard at his or her lessons是插入句中修饰主语的非限制性定语。