I think it’s impolite to play ______ trick on others just for ______ fun
| A．a：＼ | B．＼；a | C．the；＼ | D．a；a |
Many people complain of the rapid _____ of modern life.
| A．rate | B．pace | C．speed | D．growth |
The government is _____ and will take the necessary steps to maintain security and stability.
| A．on the alert | B．out of control | C．on guard | D．in vain |
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 |