Can you ____________ this word in English ,please ?

Miss Zhang, I can’t find my pen. — If you can’t find _____, you can borrow _____ from your classmate

I have learned how to keep my hair ________. So _____ my classmates.

Some of the girls don’t like their new teacher ____ with them too little after class.

_____ the kind people around, he was sent to hospital in time and saved by the doctors.[ ]