I haven’t seen Sara since she was a little ___________
It is ___________ the customers’ needs that has made chain stores so popular in big cities in China.
The young man insisted that he _________ nothing wrong and __________ free.
When first __________ to the market, the computer software was not a success due to its complexity in operation.
It’s certainly been a long time _________ we met last time.
Unfortunately, the element Madam Curie devoted all her life her death.