That problem________by some teachers in their offices at the present time.

　　A．is been studied

　　B．is being studying

　　C．is been studying

　　D．is being studied

　　There is________to be worried about.

　　A．nothing setious enough

　　B．nothing enough serious

　　C．enough serious nothing

　　D．serious enough nothing

　　In this country,sales of fruit and vegetables________50％ in the last three years.

　　A．have raised to

　　B．have risen by

　　C．have raised by

　　D．have risen to

　　________are no longer looked down upon.

　　A．Woman workers

　　B．Woman worker

　　C．Women workers

　　D．Women worker

　　—Do you like sitting in the garden,enjoying the________?

　　—Yes,especially on the afternoon of a winter day.

　　A．sunshine

　　B．sunset

　　C．sunup

　　D．sunrise

　　My English-Chinese dictionary has disappeared. Who________have taken it?

　　A．should

　　B．must

　　C．could

　　D．would

　　Be careful when________ the homework.

　　A．doing

　　B．do

　　C．you doing

　　D．you did

　　—He speaks English so well!

　　—Yes,he________abroad.

　　A．may have studied

　　B．might study

　　C．must be studying

　　D．studies

　　The radios in the other shop will be________,but________.

　　A．cheaper；not as better

　　B．more cheap；not as better

　　C．cheaper；not as good

　　D．more cheap；not as good

　　—What about taking you to lunch?

　　—Great!But are you________?

　　A．true

　　B．real

　　C．ready

　　D．serious