In a courtroom it is sometimes difficult to ______ who is innocent and who is guilty．
| A．distribute | B．develop | C．design | D．distinguish |
— Is that the middle school you often refer to?
— Right, just the one ______ you know I used to study for years.
| A．that | B．which | C．where | D．what |
. It is the test system, ______ the teachers, that is to blame for the heavy burden of middle school students nowadays.
| A．other than | B．or rather | C．rather than | D．more than |
— May I help you?
— Yes, I’d like to try on some sports jackets just like ______ I’m wearing.
| A．it | B．one | C．the one | D．that |
Mr. Jones is on time for everything. How ______ it be that he was late for the opening ceremony?
| A．may | B．should | C．can | D．must |
We ______ last night, but we went to the concert instead.
| A．must have studied | B．might study |
| C．should have studied | D．would study |