1) I know you …an advanced geography course now a) Were taking b) Is taking c) Are taking 2) Now she …difficulty in putting facts in order a) Is having b) Has been having c) Had 3) Now she …difficulty in putting facts in order a) Is belonging b) Belongs c) Has belonged 4) Scientists in many different countries …to explain its mystery a) Are working b) Have worked c) Worked 5) These are just a few of the questions to which they … their energies a) Are devoting b) Had devoted c) Is devoting

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