题目内容
This exercise is ________ difficult ________.
[ ]
A.so; that few of us can do
B. so; that few of us can do it
C. too; for anyone of us to do
D. too; for anyone of us to do it
B. so; that few of us can do it
C. too; for anyone of us to do
D. too; for anyone of us to do it
B
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