59. Mary learned Chinese for about two years, _______is, from 1993 to 1995.
Your didn’t pass the driving test . _____, you failed.
Only in this way, _______succeed in solving the problem.
On Christmas Day, children had _____ singing, dancing and playing games.
______ when he was young, he would have a good job now.
______the most famous musician in the world, he earns a lot of money every year.