Mary did do some bad things about me, but I have ______ her for that.

Our teachers often ask us ______ over the answers carefully before handing in our papers.

I think you should phone David， who is in charge of the project____， and apologize to him．—________! It was his fault．

Has the National Indoor Stadium been completed?—– Not yet .It’s still _________ construction

You can not imagine the difficulty they had ____ the problem It isn’t ____ easy