Friends are angels who lift us to our fe
题型:选择题
问题:
Friends are angels who lift us to our feet _____ our wings have trouble remembering how to fly. [ ]
A. unless
B. because
C. though
D. when
Friends are angels who lift us to our feet _____ our wings have trouble remembering how to fly. [ ]
A. unless
B. because
C. though
D. when