I think they’ve got to the very point _______ a change is needed, or they will fail.
| A．when | B．which | C．where | D．that |
．The old couple have been married after 40 years and never once _______ with each other.
| A．they had quarreled | B．they have quarreled | C．have they quarreled | D．had they quarreled |
．-----It was careless of you to have left the hourse without turning off the gas
-----My god! _______
| A．So were you | B．So was I | C．So did I | D．So I did |
In some countries, _______ are called “public schools” are not owned by the state.
| A．that | B．which |
| C．as | D．what |
“I’m going to the post office.” “_______ you’re there, can you get me some stamps?”
| A．As | B．While |
| C．Because | D．If |
______ you are at home alone, please don’t leave the door open.
| A．While | B．As |
| C．Before | D．How |