问题描述：
一道英语的选择填空题!
In England,the weather is changeable.〔多变的〕It is a ＿31＿ subject of conversation.＂Isn＇t it a nice day?＂＂Do you think it will rain?＂.People often ＿32＿ a conversation ＿33＿ these words.
31.A.important
B.commonC.difficult
D.interesting
32.A.set off B.start
C.begsn D.stops
33.A.in B.by C.with
D.for
In England,the weather is changeable.〔多变的〕It is a ＿31＿ subject of conversation.＂Isn＇t it a nice day?＂＂Do you think it will rain?＂.People often ＿32＿ a conversation ＿33＿ these words.
31.A.important
B.commonC.difficult
D.interesting
32.A.set off B.start
C.begsn D.stops
33.A.in B.by C.with
D.for
问题解答：
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