You ____ him so closely; you should have kept your distance.
| A．shouldn't follow | B．mustn't follow |
| C．couldn't have been following | D．shouldn't have been following |
Patience is a kind of quality — and that is ___A___ it takes to do anything well.
| A．what | B．which |
| C．which | D．how |
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 |