我们应该在扔掉废物前进行分类.
We should divide the waste into different groups before it .
He is reading a book about ________(现代的)history.
Our school team ________(赢)the football match last week.
We planted many trees in ________(三月).
Check the answer on the Internet if you are ________ (不确定) about it.
Five minutes ago, Linda ________ (锁) the door and left with her mum.