这家商店的商品以固定价格出售，因此无需讨价还价。

The shop sells its products at a ___fixed price, so there's no need to bargain.

他们提供一种前五年利率固定的抵押贷款。

They offer a mortgage with a ___fixed interest rate for the first five years.

音乐会通常有固定的开始时间。

Concerts usually have a ___fixed starting time.