Choose the word or phrase that best completes each sentence below. 6. All of us have to obey _____ strictly. A. traffic B. traffic rules C. traffic jam D. regular 7. It is _____ for teenage under 18 to ride a bike in Vietnam. A. legal B. legally C. illegally D. illegal 8. Yesterday Ba and Nga _____ round West Lake. It took them an hour. A. cycled B. cycle C. cycling D. cycles 9. We are waiting for the next bus _____. A. to come B. come C. comes D. coming 10. Hurry up or we can’t _____ the last bus home. A. keep B. follow C. go D. catch 11. Pete and Liz used to go to school _____. A. by foot B. on foot C. by feet D. on feet 12. They really enjoy _____ the boat. A. driving B. catching C. sailing D. riding