Directions: In this part there are 20 incomplete sentences. For each sentence there are four choices marked A, B, C and D. Choose the ONE answer that best completes the sentence. Then mark the corre-sponding letter on the ANSWER SHEET with a single line through the centre.
31、 He is very__________ in using money.
A．economic
B．economical
C．economy
D．economize


32、We substitute fish ______ meat several times a week.
A．for
B．to
C．with
D．and


33、 It was not________1957 that he went back to America.
A．Since
B．until
C．Before
D．after


34、Your comments ________my work have proved to be helpful.
A．in
B．for
C．on
D．against


35、The search was________when the fog got thicker.
A．called off
B．called on
C．called in
D．called for


36、 He_______working till he was seventy years old.
A．kept up
B．kept on
C．kept to
D．kept out


37、 The________flowers were all that remained.
A．two yellow little
B．little two yellow
C．yellow two little
D．two little yello


38、 There are four departments at this college, __________ more than five hundred students.
A．with each have
B．each having
C．each of them have
D．with each is having


39、 Robert looked as if he were about to________when his motives were questioned.
A．flare up
B．jump up
C．burst up
D．look up


40、 If you __________ your demand, then maybe you will have more chance of getting what you want.
A．conduct
B．dismiss
C．grant
D．moderate