问题
选择题
_______ the illegal mobile WAP sites worries many parents.[ ]
A. The children's surfing
B. The children surf
C. The children surfing
D. The children have surfed
答案
答案：A
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_______ the illegal mobile WAP sites worries many parents.[ ]
A. The children's surfing
B. The children surf
C. The children surfing
D. The children have surfed
答案：A