点外卖会让我们免于准备晚餐。

Ordering takeaway will ___save us having to prepare dinner.

网上银行让客户免于去银行。

Online banking ___saves customers ___from having to visit the bank.

雇一个清洁工让她免于花几个小时打扫房子。

Hiring a cleaner ___saved her ___from spending hours cleaning the house.