You’ve passed the exam. I’m happy ______ you. [ ]

Can you show me _______ to use this kind of camera?-Sorry, I don’t know, _______.

Chinese is becoming more and more popular. It ________ in many schools in foreign countries.

______ name is Kate._______ is a teacher.

Sixteen-year-olds should not be allowed to drive a car. —-I agree. They are ____________.