英文填空问题,3点30之前给我答案
these (are) my new rollerblades.(be)
when you ( ) first learning to rollerblade,(be)
you ( ) over all the time.(fall)
my brother ( )to wear wrist guards.（refuse)
i think he ( )crazy not to.(be)
he ( ) broken his arm twice.(have)
后面括号的是给前面括号是哪类词的提示