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change has changed changing changed
solving solve to solve solved
the professor began the lecture the lecture began soon we were attracted by the lecture soon the bell announced the beginning of the lecture
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interesting; interesting interested, interesting interested, interested interesting, interested
the professor began the lecture the lecture began in no time we were attracted by the lecture immediately the bell announced the beginning of the lecture
the professor began the lecture the lecture began in no time we were attracted by the lecturer immediately the bell announced the beginning of the lecture
solving solve to solve Solved
to launch to have launched 1aunched having launched
change has changed changing have changed
So good did we receive So good were we received So well were we received So well did we receive
So were we So we were We were so So did we
change has changed changing have changed
the; a the; the /; a /; the