The young man insisted that he______ these watches and______free.
Mr. Wang made up his mind to devote all he could _____ his oral English before going abroad.
Try the new cleaner. Just a few minutes every day-that’s all it takes-_________ you could have shining floors and furniture.
Recently some studies have found that learning ___________ second language can lead to __________ increase in one’s brain power.
---Are you being_____, sir? ---No, I just want to buy a cellphone.
The old man had a son and a daughter, ____ treated him well, _____ greatly disappointed him.