students are required to take the boat race.
| A．Ten strong young Chinese |
| B．Ten Chinese strong young |
| C．Chinese Ten young strong |
| D．young strong Ten Chinese |
The young couple was worried,because neither of them was aware ______ they had lost the necklace.
| A．of the place | B．of which |
| C．where | D．of where |
—At last I’ve made it.I am on top of the world.
—______
| A．Congratulations! | B．You are really clever! |
| C．Oh,really? | D．Congratulate! |
We congratulated him ______ his getting a gold medal.That is to say: we offered him our congratulations ______ his getting a gold medal.
| A．at;on | B．of;on | C．on;for | D．on;on |
You have made a few mistakes in your composition but ______ you have done well.
| A．as a whole | B．on the whole |
| C．on the other hand | D．generally speaking |
In the experiment you should keep a watchful eye ______ the developments and record every detail.
| A．in | B．at | C．for | D．on |