I certainly appreciate _____ us about thedelay in delivering the materials because we had planned to begin worktomorrow.

6Measures have been taken to prevent accidents, but much ______ for more improvement

To their ________,they still help that old single man.[ ]

These reference books donated by a non-profitable organization are available for ____ wants to have it.

Though Jack is often tired ______ his job, he is never tired ______ itIn fact, he enjoys it[ ]