问题
选择题
I ______ you already that washing hands often will help prevent the A / H1N1 flu. [ ]
A. tell
B. told
C. have told
D. am telling
答案
答案：C
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I ______ you already that washing hands often will help prevent the A / H1N1 flu. [ ]
A. tell
B. told
C. have told
D. am telling
答案：C