The sentence,which puzzled John,was also me and we had to turn to our English teacher for help.
How can they learn anything ______ they spend all their spare time watching television?
In this section, we will briefly describe possible ways of reducing the costs and risks ______ in doing this.
This practice satisfies people of high moral standards psychologically and materially and ______ encourages other people’s enthusiasm.
______ city in Zhejiang Province, located on the river’s upper reaches, is believed to be ______ source of the dead pigs.
—Can I use your phone? —______.