问题
he governments and scientists not worked together , AIDS-related deaths _______ since their highest in 2005.
A:had not fallen
B:would not fall
C:did not fall
D:would not have fallen;
B:would not fall
C:did not fall
D:would not have fallen;
正确答案是：
同类题型
Bob, you’re absent-minded!—Oh, I’m sorry I ______ attention to you, Miss Shute
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▲ difficult ▲ her to make such a big decision within so little time.