Question

【题目】In Switzerland, things like glass and plastic _____ into different groups and then recycled
A.separate
B.separated
C.are separated
D.is separated

Answer 1

【答案】C
【解析】主语things"东西"是被分类，用被动语态表达，主语things是可数名词复数，助动词用are。句意：在瑞士像玻璃塑料这样的东西都进行分类，然后循环使用。