Vocabulary and Structure(20 points).
Directions：There are 30 incomplete sentences in this part.For each sentence there are four choices marked A,B,CandD.Choose the answer that best completes the sentence.Then mark the correspondingletter on the Answer Sheet with a single through the center.
1、 It is more__________ and healthful to be in the countryside than in town.
A.economical
B.economic
C.political
D.financial
2、 I regret__________ you that we are unable to offer you employment.
A.to inform
B.informing
C.to have.Inforemed
D.informed
3、 __________ I was talking to Barbara，I learned that Tony was in hospital.
A.When
B.While
C.Since
D.0nce
4、 The doctor had almost lost hope at one point，but the patient finally__________ .
A.pulled out
B.pulled through
C.pulled up
D.puHed over
5、 I wonder whv they__________ you so much for such a dictionary.
A.asked
B.charged
C.required
D.requested
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