The three teams _____ different ways to solve the problem and they all succeeded at last．
| A．adopted | B．admired |
| C．adapted | D．Addicted |
Carl wanted to play a joke on Bob but gave himself _____ by laughing.
| A．away | B．in | C．out | D．up |
The rapidly growing birth rate brings about a lot of environment problems, which the government is supposed to take _____.
| A．significantly | B．severely | C．earnestly | D．seriously |
The two dogs started to fight, so we tried to _____ them.
| A．split | B．separate | C．tear | D．divide |
Japan has to employ an increasing number of overseas workers because there is no easy solution to its labor _____.
| A．decline | B．rarity | C．vacancy | D．shortage |
The thieves _____ him _____ in the park, took his wallet and escaped.
| A．held .. back | B．held .. up | C．held .. on | D．held .. out |