. I forgot ________ my exercise-book with me, so I can’t lend it to you now.
——How far apart do they live?——_____I know, they live in the same neighborhood.
Some kinds of animals can change their color with _______.A. conditions B environment C. surroundings D. situation
The headmaster has a particular way of_____her students nervousness when they speak.
Gathering clouds________the coming storm.
In ____Chinese culture, marriage decisions were often made by parents for their children.