g the firm as a clerk, he got rapidpromotion, and as amanager

What will you do if you have to____an invitation to a party-I think l will say sorry and tell the reason at the same time.

We tried ________________ 5 times a week to keep healthy.

The teacher always makes his class so ____and interesting for us

The professor could hardly find sufficient grounds _____his arguments in favor of the new theory.