-- _____ classes are there in your school?   –Thirty. 

______ my little brother is a child , he knows a lot.

There are no buses,          you’ll have to walk.

Jason was ill yesterday, ________ he didn’t go to school.

 – Your English teacher is so popular with students.-- You are right! Jennifer’s nice to us all. She’s _____ a teacher _____ a friend for us.