I will let you know about it as soon as I _________ the news.
Call us ____ you need____4008823823. KFC is ready for you.
After reading the report, I found ____ important to do something to protect the birds in the wild.
Many old people take a walk after supper ____ have good health.
---I think English is ____unimportant subject.---I don’t think so. It is ____useful tool when we talk with foreigners.
--If you have any trouble, be sure to call me.--______________.