In a sport team each player has a clear role, and there are few occasions ______ members are confused or uncertain of their roles.

It seems that living green is easyand affordable. A small step makes a big difference.

下列句中加横线的词语，与所给例句意义和用法相同的一项是 ( )例句：得复见将军于此

Which of the following is NOT a detail

Dad, please tell me when Mum_____. I miss her very much. —She will return when she_____ her task. And she will bring a nice present for you.