Please call my secretary to arrange a meeting this afternoon,or________it is convenient to you.                                                            
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A
whenever
B
however
C
whichever
D
wherever
推荐题目
___ is the most useful invention?
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A
Do you think which of these
B
Which of these you know
C
Which of these do you know
D
You know which of these
A few people were killed in the fire, but _____ were saved.     
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A
the most
B
most of them
C
most of whom
D
most
The old man was telling a funny story, surrounded by many kids, _________ with fascination.
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A
all of whom listened
B
all of whom listening
C
all of them listened
D
all of them were listening