题目内容
20．There will be a sports meeting the day after tomorrow．（改为否定句）Therewon'tbea sports meeting the day after tomorrow．
分析 后天要举行一场运动会．
解答 62．won't； be 此句谓语动词为will be，will的否定形式为won't．
点评 熟悉否定句的变化规则．
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A．owner
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A．owner
B．driver
C．policeman
D．community
52．We often see the wet floor sign inB．
A．offices
B．restaurants
B．roads
C．highways
53．Welcome signs can be found in the political border，such as entering aD．
A．state，province
B．county
C．city or town
D．A，B，and C
54．If you see an International safety symbol for an equipment，just like in the fourth box，It meansB．
A．High voltage，you can use it．
B．High voltage，don't touch it．
C．You can turn here．
D．You can turn here again．
55．When the traffic light warning sign appears，the drive is warmed to prepare toA．
A．slow down
B．stop at once
C．to wait
D．turn around．