The mother was trembling with anger. She _____ her son and said nothing.
With more people ____ the traffic rules, our city is becoming better organized.
I’m progressing in physics ____ the teacher’s well-organized teaching and exact explanation.
She said the fun of reading books was different from ___ of any other kind.
---Would you mind me opening that door? ---_____ , but it’s not allowed.
The roads are crowded _____ walking is quicker than driving.