It is believed that as a teacher, a deep knowledge of the subject is important, but __________ important is the ability to pass that knowledge on to the students effectively.
| A．equally | B．significantly |
| C．quite | D．perfectly |
They lost their way in the forest, and _______ made matters worse was that night began to fall.
| A．it | B．which |
| C．that | D．what |
He told me the news, believe it or not, ______ he had earned $1 000 in a single day.
| A．that | B．which |
| C．as | D．because |
I think, though I could be mistaken, ______ she liked me.
| A．who | B．which |
| C．that | D．what |
Everyone knows, perhaps except you, _______ your girl-friend is a cheat.
| A．who | B．which |
| C．that | D．what |
Someone is ringing the doorbell. Go and see ______.
| A．who is he | B．who he is |
| C．who is it | D．who it is |