When the accident happened, many ________were passing by. So they told a lot to the police about it.—Oh, we should write a report about them.

______ leaves the room last ought to make sure that the windows are closed and the door locked.

After work, although Mom was tired，she went on dinner for us yesterday.

rage of 130000 Chinese _________ abroad for studies every year overthe past few years, boosting exchanges in the educational fields

Tom, do you know if Sam ________to my party next week—I think she will come if she________ free.