The health security systems of many countries are undergoing considerable ______.( )
reservation
transformation
distinction
submission
The workers demanded that their employer_____ their working conditions.
I would rather she_____ here tomorrow because I’m too busy.
The boss insisted that every minute ______ made full use of ______ the work well.
---It rained cats and dogs this morning. I’m glad we took an umbrella. ---Yeah, we would have got wet all over if we ______.
----Where have you been? ---- I _______ stuck in the traffic. I ________ here earlier.