Better take a break. You ______ the Inte
题型:选择题
问题:
Better take a break. You ______ the Internet for more than three hours. [ ]
A. are surfing
B. surfed
C. have surfed
D. have been surfing
Better take a break. You ______ the Internet for more than three hours. [ ]
A. are surfing
B. surfed
C. have surfed
D. have been surfing