Can you tell me __________
| A．who is that gentleman | B．that gentleman is who |
| C．who that gentleman is | D．whom is that gentleman |
Mary took _____ advantage of the opportunity and tried to make _______ good impression on her new boss.
| A．an; a | B．不填；a |
| C．an；不填 | D．不填; 不填 |
--If we don’t do our best to reduce pollution, man’s history won’t last long.
--_________.
| A．It’s OK | B．You are absolutely right |
| C．That’s all right | D．Mind your own business |
He likes sports, ________ I’d rather play games on computers.
| A．as | B．while |
| C．however | D．even if |
________ he is the last man I wanted to see, I did my best to help him.
| A．As | B．Now that |
| C．Although | D．However |
He tried his best to solve the problem, ________ difficult it was．
| A．however | B．no matter |
| C．whatever | D．although |