单选题：Perhaps the days will come ____ people will be able to breat

题目内容：

Perhaps the days will come ____ people will be able to breathe clean air in cities. A．when
B．as
C．while
D．sine

参考答案：

答案解析：

根据短文回答第题：A．I miss you，tooB．It’ a niceC．Oh，come onD．for the w

根据短文回答第题：A．I miss you，tooB．It’ a niceC．Oh，come onD．for the worldE．Sounds as ifF．

分类：英语题型：单选题

It is important to____ our awareness about environmental protection．A．improve B．

分类：英语题型：单选题

It's a pity that some of the people____cannot come tO the party．A．inviting B．inv

分类：英语题型：单选题

分类：英语题型：单选题

分类：英语题型：单选题