22.I’m terribly sorry to turn you down this time, but I promise I will ________ to you next time.
China has got a good ________ for fighting against the flu with its careful and smooth organization.
Shelly had prepared carefully for her biology examination so that she could be sure of passing it at her first ________.
All documents are printed in the two official languages;________,English and French.
It is most instructive lecture that I _______ since I came to this school.
The shocking news made me realizeterrible problems we would face.