Looking at my mother's ___________ face, I regretted not having told her my whereabouts on the phone.

The twins has studied in this school  ________    .

You should be       .You mustn't take any unnecessary risks until you are quite sure.  

He is a ________ man—he always says what he thinks.

It seems ________ to our modern world, where everything is a rush and we try to cram as much into every minute as possible, but if not busy, we feel unproductive and lazy.