题目内容：

it only takes 15 minutes to get there on foot.改为同义句
it is only 15---------walk.
turn left at the 3rd crossing.
--------the 3rd ------ on left

优质解答

minutes'
take; crossing
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追问：

he ----(doesn't didn't) leave ----(until,and ,or)he finshed his work。怎么选呢

追答：

didn't ; until