He was just about to give up hope，________a good idea came into his mind.
| A．when |
| B．while |
| C．as |
| D．since |
_____ his great courage, the boy was left alone in a dark room, no lighted candle_____ it up．
| A．Considered；lighted |
| B．Considering；lighting |
| C．Having considered；lighted |
| D．To consider；lighting |
–Why？This is simply a common bike!
–_____ sir．It’s our special offer today．
| A．Don’t mention it |
| B．Let me see |
| C．So it is |
| D．Neither do I |
His opening up _____ food processing factory is _____ comfort to his parents．
| A．不填；a | B．a；不填 |
| C．a；a | D．the；不填 |
Tens of thousands of people marched to the Martin Luther King Jr．Memorial, celebrating the 50th anniversary of King's famous speech, through which we know _____ he said meant to the black．
| A．that what | B．what that |
| C．what what | D．that which |
The boy _____ loudly because he _____ his way in the jungle and thought he couldn’t go back home．
| A．had cried；lost | B．has cried；has lost |
| C．cried；had lost | D．cried；has lost． |