Yesterday morning he got up earlier than ______, for it was not a(n) ______ day.
We have very strict quality control and anything imperfect is________,so customers feel secure about our products.
A good speaker is supposed to manage to ________ the listeners what he means.
This group of designers ________a plan for the project of the company.
The police suspected him of carrying drugs so they________his bag,but found nothing.
.Walking alone in the dark,the boy whistled to ________ his courage.