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

連詞辨析. Though雖然,盡管;when既然,當……時；unless除非，如果不；because因為；句意：如果你不能和你的同學們融洽相處，你不會在學校感到高興。故選C。