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We must look ______ left,then _____right before we cross the road.
1./,/
2.at,/
3./,at
4.at,at
人气:287 ℃ 时间:2019-10-01 20:04:43
解答
2.look at 词组,at不能省.这里的LEFT 和RIGHT不是复词,是名词.
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