In the poor parts of America's big cities there is a lot of crime, _____ .

A．and many more is serious                  B．much of it is serious

C．and much of it is serious            D．more of it is serious

I thought that was dull to watch a game in which players kicked a ball to each other.     

           A      B                  C            D

                                                          (    ) _____________

Mother told Jim to ______ the milk until it boiled and then turn off the gas.

A. observe      B. watch       C. notice       D. glance at

Mike       have won the competition easily yesterday, but he gave up．

 A．could         B．might         C．should                D．must

George applied for the position three times ______ he finally got it.

  A. before B. until C. when D. after

In recent years much more emphasis has been put______ developing the students

productive skills.

 A. onto B. in   C. over D. on

The baby was left in charge of my aunt.

It’s illegal for anyone under 21 in the USA, the highest drinking age in the world to buy alcohol, and stores or restaurants caught       alcohol to people under the legal age will involve

    their licenses.

A. to sell; to lose  B. to sell, losing  C. selling; losing D. sold; lost

As _______rule, apples are sold by _______weight and eggs by ________dozen.

  A. a; 不填；the            B. a; the; the

  C. a; a; the               D. the; 不填；不填

Please don’t run _____ far.

A. much  B. more       C. that      D. fairly