Choose the correct answer for each gap in the following sentences or do as directed: 11. Nam ……… his bike to school, when he suddenly fell down. a. rides b. was riding c. rode d. is riding 12. They ………vegetables this time last year. a. planted b. was planting c. were planting d. plants 13. At the Mid-Autumn Festival, kids can sing, dance, and enjoy moon cakes; ………,every child likes it very much. a. however b. although c. if d. therefore 14. I look forward to the Mid- Autumn ………I can eat moon cakes. a. because b. while c. though d. if 15. It’s better avoid ………during the rush hours. a. travel b.to travel c. travelling d. travelled