單項選擇題On formal（）, people pay more attention to manners.

A.situations
B.cases
C.conditions
D.occasions


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1.單項選擇題On average, a successful lawyer has to talk to several（）a day.

A.customers
B.supporters
C.guests 
D.clients

2.單項選擇題On（）side of the street there are some trees.

A.both 
B.either  
C.every
D.all 

3.單項選擇題Of all the students in our class, Betty writes（）

A.very carefully 
B.most carefully 
C.more carefully
D.the most carefully

4.單項選擇題Not until the meeting was over（）that he had made a mistake in his speech.

A.he realized   
B.did he realize 
C.hehas realized   
D.has he realized

5.單項選擇題Nobody believed him（）what he said.

A.even though
B.in spite
C.no matter
D.contrary to