The Yellow River____________ flood large areas, but now the waters of it are used to_______ energy.

His teacher told him that since his parents were working abroad , either his grandparents or one of his uncles ______ allowed to come to the parents’ meeting

______ difficult the problem was, he tried his best to solve it[ ]

Today she looks ______. Look ! She is looking _______ at his son.

We Chinese can work wonders, that is, we can make ____.