They took ________ measures to prevent poisonous

They took ________ measures to prevent poisonous

Some boys took chemicals like soda and iodoform. powder because ______.A．they liked to set

We must take precautious measures to prevent the river______.A．to be pollutedB．from pollut

They took ____________ measures to prevent poisonous gases from escaping.A、efficientB、

I took the children to the zoo today to______ the party they missed the other day.A．provid

I took _____ that they would apologize for what they had done to the picture .A.it se