Not until he had left his friend _______ how important friendship was for him.
| A．did he realize | B．he realized | C．had he realized | D．he had realized |
However _______, it’s worth it and I’ll get it .
| A．the watch costs | B．much the watch costs |
| C．the watch will cost | D．much does the watch cost |
—_______ do you like to fly, economy or first class?
—Economy, I think.
| A．What | B．Where | C．Which | D．How |
After the heavy mudslide happened in Sichuan, hundreds of newspaper reporters were sent to ____ the natural disaster.
| A．describe | B．cover | C．witness | D．experience |
—I don’t know what I _______ without the suitcase you lent me.
—Glad to have been of some help to you.
| A．would have done | B．would do |
| C．should have done | D．should do |
The way you thought of _______ the math problem is greatly creative .
| A．solving | B．settling | C．to solve | D．to handle |