Ex. 12(a). Form nouns from verbs using the given suffixes and
translate them on Russian 
-age: to break, to leak, to pass, to store
-al: to refuse, to survive, to approve, to deny
-ance: to clear, to expect, to maintain, to appear, to clear, to assist, to
perform, to comply, to admit, to guide
-ation: to expect, to localize, to inform, to modernize, to exploit, to
present, to found, to experiment, to install, to limit, to recommend, to relax,
to tax, to transport, to combine, to utilize, to consider
-ence: to exist, to prefer, to excel, to correspond, to interfere, to confer,
to differ, to depend, to transfer, to insist
-ion: to edit, to exhibit, to operate, to insert, to regulate, to invent, to
prevent, to generate, to translate, to prohibit, to create, to suggest
Ex.12(b). Form nouns from the verbs and translate them on Russian 
to dismiss, to remove, to specialize, to calculate, to reform, to persist, to
infer, to continue, to observe, to refer, to allow, to educate, to organize, to
use, to persist, to rely, to disappear, to realize, to correspond.