数字泡泡屋，快来填空吧！ 9 + 8 =
1. plusequals .
16+=30
2.plusequals .
+ 12=79
3.plus equals .
80+ =100
4.plusequals .1. 17, nine, eight, seventeen 2. 14, sixteen, fourteen, thirty
3. 67, sixty-seven, twelve, seventy-nine 4. 20, eighty, twenty, one hundred