My mother asked me to repeat telephone number second time so that she could write it down .
The ___ to her back will put her out of action for several weeks.
Living in a polluted environment, people may ___ easily.
With the ___ of Mr Liu, I made great progress in speaking English.
—Carolina didn’t invite us to her birthday party.—___? I don’t care.
Reforming the education system will be a long and difficult ___. In this course, people should make effort to throw the old one.