Sometimes we should roles so that we can understand each other’s difficulties, thus promoting our cooperation.
| A．occupy | B．imitate | C．assess | D．switch |
_______makes mistakes must correct them.
| A．Who | B．Anyone | C．Whoever | D．Anybody |
_______you come or not is up to you.
| A．What | B．If | C．Why | D．Whether |
_______he won't go there is clear to all of us.
| A．How | B．What | C．Why | D．This |
_______the house will be built will be discussed at tomorrow's meeting.
| A．If | B．Where | C．That | D．What |
_______we'll finish translating the book depends on the time.
| A．When | B．Why | C．What | D．That |