There's a in our office that when it's somebody's birthday, they bring
in a cake for us all to share.
| A．tradition | B．balance | C．concern | D．relationship |
It was too hard for the firefighters to get close to the burning building. All their attempts to rescue the people trapped were ______.
| A．in place | B．in return |
| C．in vain | D．in danger |
When first _______ to the market, the products didn’t attract much attention.
| A．introducing | B．introduced |
| C．was introduced | D．being introduced |
一My cousin would like to risk the weight-loss pills rather thanin a gym．
—Really? She must be mad．
| A．to take；work out | B．to take；working out |
| C．taking；working out | D．taking；work out |
I’m not a little tired today after giving the room a thorough cleaning and I have never had ____ today.
| A．as tiring a day as | B．as a tiring day |
| C．tiring as a day as | D．day as a tiring as |
Faced with trouble or difficulty，a person takes _______help that is available．
| A．whatever | B．whenever |
| C．wherever | D．however |