39He will stop showing off , if no notice______ of him

It was a difficult job for him. He had tried everything but it made little .

Some government officials in the USA have pointed out that the death of Osama Bin Laden means keen vigilance _____ the end of terrorism.

If you______to her about it yesterday, you ______ what to do now.

Measures have been taken to clean up the lake,but it will be some time________the situation improves[ ]