Such a problem is____difficult for a primary school student ___.
A.so; to work
B.very too; to work out
C.rather too; to work out
D.quite too; to answer
答案:C
这是一个too... to... 的句型,首先排除A。very不能修饰too, 而rather可以。其次,work out常与problem搭配,而answer多与question搭配。