问题补充：
—You stop me.
—Even if you it, I won allow you to swim across the river.
A. mustn ; dare not do
B. may ; dare not do
C. can; dare to do
D. needn ; dare do
答案：
A. mustn ; dare not do
B. may ; dare not do
C. can; dare to do
(答案→)D. needn ; dare do
解析：本题是情态动词的考查。首先肯定对前半部分是否定的，而mustn 表示禁止，与题意不符。dare可以作情态动词，也可以作实义动词。
