Question

You won’t feel happy at school ____ you get on well with your classmates.

A．though

B．when

C．unless

D．because

Answer 1

C

连词辨析. Though虽然,尽管;when既然,当……时；unless除非，如果不；because因为；句意：如果你不能和你的同学们融洽相处，你不会在学校感到高兴。故选C。