– I wonder how much you charge for your services. -- The first two are free________the third costs $30.
–Why do you know so much detail about the accident? --I ________ a walk nearby when it happened.
Wherever you prefer to work after graduation, ________ close contacts with your family members.
He has donated some money to those who________ in poverty, which of great help.
–________ the ticket for the movie? --Yes. I bought it online by group buying.
Actually you can make learning English a process, ________ you can not only learn much knowledge but also interesting cultures.