________ has been mentioned above，continued chairman after he took a sip of coffee，________ the project must be carried out before spring flood comes.
| A．As；that | B．That；which |
| C．This；which | D．It；that |
George could not speak Italian so he an Italian girl to work as an interpreter.
| A．hired | B．accompanied | C．instructed | D．directed |
She wrote a month ago, ______ we’ve heard nothing.
| A．since when | B．before which | C．since that | D．after which |
Yesterday, Jane walked away from the discussion. Otherwise, she ______something she would regret later.
| A．had said | B．said | C．might say | D．might have said |
His health is ______improving. I'm sure he will come back to work soon.
| A．gradually | B．frequently | C．fluently | D．finally |
My first _______ of him was that he was a kind and thoughtful young man.
| A．expression | B．attention | C． satisfaction | D．impression |