People living in the desert choose to ke
问题:
People living in the desert choose to keep their ancient lifestyles and customs,_______ people in cities
throw away their cultural traditions. [ ]
A. when
B. if
C. unless
D. while
People living in the desert choose to keep their ancient lifestyles and customs,_______ people in cities
throw away their cultural traditions. [ ]
A. when
B. if
C. unless
D. while