---John has put forward______ most challenging question for us to answer.---Yes, it really is. I have never heard______ harder one.
Every year, typhoons and losses ______ lead to are frightening though measures have been taken.
The managers discussed the plan that they would like to see __________ the next year.
I can’t thank him too much, ____________ I couldn’t have finished the project in time.
Seeing the happy _______ of the kids playing on the playground, I can’t help thinking of my childhood.
Claire had her luggage ________ an hour before the plane left.