The university students____the results of their chemistry experiment., are analyzing, is analyzing, analyze, Our professor____the main concepts before starting the laboratory activity., are explaining, is explaining, explains, I_____a presentation about environmental pollution this week., am preparing, is preparing, prepare, The researchers____new methods to improve water quality., is developing, develops, are developing, The students____their assignments because they are still collecting information., isn't finishing, aren't finishing, don't finishing, Our professor____the final results yet; she is checking the calculations.isn't discussing., isn't discussing, aren't discussing, doesn't discussing, I____my usual study routine this week because I have several university projects., aren't following, don't following, am not following, The laboratory assistants____the equipment at the moment because the experiment is still in progress., isn't cleaning, aren't cleaning, doesn't cleaning, _____the chemistry students____the substances carefully during the experiment?, Are / measuring, Is / measuring, Do / measuring, ___your professor ____the assignment instructions right now?, Do / explaining, Is / explaining, Are / explain, _____you_____for your next university examination this week?, Is / studying, Do / studying, Are / studying, What_____the students_____in the laboratory right now?, are / investigating, do / investigating, is / investigate, Why____the professor____the experiment again?, do / repeating, is / repeating, are / repeat, Where____your classmates____for their research project this week?, is / searching, do / searching, are / searching, How____the researchers____the quality of the water samples?, are / evaluating, does / evaluating, is / evaluate

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