Ladies and gentlemen, please remain __________ until the plane has come to a complete stop.
Smoking does great harm to our health. is smoking allowed in public places.
--- How did you learn to speak English so well?--- By practicing English I had a chance.
Mr. Li made up his mind to devote all he could his oral English before going abroad.
Teenagers who discover they were often search for their biological parents when they are old enough.A. adapted B. adoptedC. brought up
Mr. Smith, of the speech, started to read a novel.