How many women teachers are there in your school?－_____ of the teachers _____ women

This is ________ one-eyed sick animal that needs ________ X-ray.

Helen，my parents asked me to give you some flowers______ your birthday.—Oh，please say thanks______ me.[ ]

As we all know, it’s not polite to keep others _____ for a long time.

Sorting wastes is good ________ the environment.[ ]