pesticide

我在花园里喷洒了杀虫剂来驱赶蚊子。

I sprayed ___pesticide in the garden to keep the mosquitoes away.

园丁喷洒杀虫剂来防止蚜虫侵害玫瑰花。

The gardener sprayed ___pesticide to prevent aphids from damaging the roses.