/ WILLING / SISTER / HELP / MOTHER / WHEN / HOUSEWORK / HOLIDAY /....

80. / willing / sister / help / mother / when / housework / holiday /.a. My sister was willing to help our mother for the housework when she had a holiday.b. My sister was willing to help our mother with the housework when she had a holidayc. My sister was willing to help our mother at the housework when she d. My sister was willing to help our mother on the housework when she