There were some chairs left over _____ everyone had sat down.
| A．when | B．until | C．that | D．where |
Scientists have many theories about how the universe_____.
| A．came into being | B．was coming into being |
| C．had come into being | D．would come into being |
Teachers required that all the students ___ their homework all alone.
| A．must finish | B． would finish | C．had to finish | D．finish |
--- You didn’t go to the party last night, did you?
--- I do wish I ___ there.
| A．was | B．were | C．had been | D．went |
--- Can you tell me how many study groups there are in a class?
--- Generally speaking, a class often ___ 8 study groups, each with 7 group members.
| A．is consisted of | B．is made of |
| C．made up of | D．consists of |
___ , he still put people’s life in the first place.
| A．However he was tired | B．Now matter he was tired |
| C．Now matter how was he tired | D．However tired he was |