【简答题】Often we take for granted the many household items we use every day. It is difficult to imagine there was a time in the past when these inventions did not exist. Actually, several of the most common i...
【单选题】Riot police often use tear gas to ______ the mob.
【简答题】We often use the machine for bicycles.【改为被动语态) The machine__________ often__________ for bicycles by us.
【简答题】We often use the term craving when referring to ______ addiction.