... ourselves 8. Don’t come in. Please wait ____________________for your turn. A. inside B. outside C. upstairs D. downstairs 9. Alexander Graham Bell was born _____________________March, 3, 18 4 7. A. ... invention (6)___________Alexander Graham Bell in 18 7 6, the design of the telephone set has (7)________greatly. However, the way the telephone works is still the (8) _________ 1. A. popular...