WHEN! II ARRIVE/ LECTURE/ ALREADY START/ PROFESSOR/ WRITE/ OVERHEA...

50. When! II arrive/ lecture/ already start/ professor/ write/ overhead projector// A. When I arrived the lecture already started and the professor wrote the overhead projector. B. When I arrived lecture had already started 'and professor wrote the overhead projector. C. When I arrived the lecture had already started and the professor was writing on the overhead projector. D. When I arrived the lecture had already started and the professor had writing on the ______________THE END_______________ TOPIC 4. VOLUNTEER I. VOCABULARY: