Let us hope we can settle the matter without _____ more trouble.

Never should we forget the war and sufferings _____ caused to the people.

We should never ever forget about the war in Iraq and the sufferings(苦难) ______caused to the people there.

--- ________ of them knows the answer. What can we do now?  --- Let’s ask a third boy for help.

Being a parent is not always easy, and being a parent of a child with special needs often carries with _______ extra stress.