___ is better to build house on rock not on sand.
| A．That | B．It | C．This | D．What |
Upon graduation he asked to be sent to _______________.
| A．where he is most needed | B．where he needed |
| C．where he is mostly needed | D．where is he mostly needed |
_____________ leaves the room last ought to turn off the lights.
| A．Anyone | B．The person | C．Whoever | D．Who |
They have no idea at all ____________.
| A．where he has gone | B．where did he go |
| C．which place he has gone | D．where he has gone |
_____________ you have done might do harm to other people.
| A．That | B．What | C．Which | D．This |
______ hungry I am, I never seem to be able to finish off this loaf of bread.
| A．whatever | B．Whenever | C．Wherever | D．However |