In my opinion, what he told us just now about the affair simply doesn’t make any_____.

We finally arrived at a(n)_____that the work must be completed within 3 days.

  Father said he would come to my graduation ceremony, he didn't, _______.

I watched the plane go higher and higher until I lost _____ of it．

____ of time and energy have been spent in making the earthquake-stricken areas a permanent museum to remind people how disastrous a natural disaster can be.