问题
选择题
We all feel it is Jack as well as his wife that_______for their son’s bad performance at school.
A．are to blame
B．is to be blamed
C．are to be blamed
D．is to blame
答案
答案：D
考查主谓一致。作主语的是Jack，所以用单数，be to blame for是固定短语，意思是“应对……负责”。