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、 These plastic flowers look so__________ that many people think they are real.
A．beautiful
B．natural
C．artificial
D．similar


32、It is said that he a __________ murder.
A．committed
B．conducted
C．executed
D．emitted


33、 I knew I could not finish my homework_______
A． by he had come
B．until he came
C．when he comes
D．before he comes


34、 Do what you think is right, __________they say.
A．however
B．whatever
C．whichever
D．if only


35、 The flat where we live__________ three rooms only.
A．is comprised of
B．is made of
C．contain
D．is composed of


36、It' s no use ringing me up at the office this week because I' m________
A．by my leave
B．at leave
C．in holidays
D．on holiday


37、 You will be late __________. you leave immediately.
A．unless
B．until
C．if
D．or


38、 From then on, a sound system of Party Committee meetings was________in all leading bodies.
A．constructed
B．instituted
C．confirmed
D．given up


39、 My next door neighbor Johnson seems to have________opinion on the show last night.
A．rather the strong
B．rather strong
C．a rather strong
D．the rather strong


40、 Every director needs an assistant that he can__________ to take care of problems that may occur in his absence.
A．count of
B．count for
C．count on
D．account for