问题
选择题
You won’t feel happy at school _________ you get on well with your classmates.
A．though
B．when
C．unless
D．because
答案
答案：C
题目分析：句意：如果你和你的同班同学相处不好你不会在学校感到愉快。A. though虽然B. when当 C. unless如果不D. because 因为，根据句意，故选C。