—I wonder how much you _______for your services. ---Well, the first two are free while the third costs $30 .
It was ____ I met Mr Green in Shanghai.
Was it because he was ill ____ he asked for leave?
It was on October 1st ____ new China was founded.
It was in the rice fields ____ we had our league meeting.
It was through Xiao Li ____ I got to know Xiao Wang.