Form the correct words out of their roots given in the brackets:

It's astonishing he didn't tell us he was going to leave. His sudden .......... (APPEAR) is even more surprising when you consider he had a very important appointment last evening.
The CNN channel ........ (CAST) the global news at all hours.
They seem to be quite ......... (CONCERN) and calm even though they have neither a map nor a compass.
........ (STRICT) speaking, your response is more than disappointing.
Look at the sign! 'No ......... (VACCANT)' again. This is the fifth hotel we have gone to in vain this evening.
Living on the ....... (SKIRT) of a big city may have its good points. Consider at least the lower air pollution and not so heavy traffic.
They do need a new apartment. The conditions they are living in now are simply ......... (REGRET). Just imagine rats scampering on the floor.