We can’t walk there _________, we must find a taxi

Most students find ________ hard to learn English well.

George Washington was born in 1732 in arich family in _______ is now the state of Virginia.

Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, ___________ aims to provide better service to travelers from outside the city

.____he was fired by the company is____he didn’t work hard.