______ has already been pointed out, only by correcting mistakes, can you make progress.
| A．It | B．As | C．That | D．What |
I have reached a point in my life _______ I am supposed to make decisions of my own.
| A．which | B．where | C．how | D．why |
Whenever I met her, ______ was fairly often, she greeted me with a sweet smile.
| A．who | B．which | C．when | D．that |
---Is there any possibility _______ you could pick me up at the airport?
--- No problem.
| A．when | B．that | C．whether | D．what |
Later in this chapter cases will be introduced to readers ________ consumer complaints have resulted in changes in the law.
| A．where | B．when | C．who | D．which |
_________ wants to stay in a hotel has to pay their own way.
| A．Anyone | B．The one | C．Whoever | D．Who |