13．About 90 percent of the equipment presented by the administration，as well as the facilities of our own， ______made good use of in teaching．

Could you tell me something about the boy whohelped you just now — Sorry, I know nothing about him. We are ______.

My mother is English teacher in No. 2 Middle School.

You’d better keep the medicine somewhere safe, out of the children’s .

Do you have time to go for a walk with ______– Yes, of course.