______ is _____ the students to find out the meaning and the usage of new words.
Theysatintheroomwiththecurtains_____.
Thepurse_____,theywenttothepolice.
Theyfirstreachanagreementonthebasicprinciple,thedetails____later
Christmas____,thefamilywasfullofexcitement.
____fiveminutes____beforethelasttrainleft,wearrivedatthestation.