1、We should allow students to design their school uniforms.
Students __ __ __ to design their school uniforms.
2、How long may I keep the book?
How long ___ the book __ __?
3、We should speak to old men politely.
Old men __ __ __ __ politely.
人气：259 ℃ 时间：2019-08-20 21:36:12
解答
Students _should be allowed_to design their school uniforms.
How long _may__ the book _be kept_ __?
Old men _should be spoken to _ __ __ __ politely.
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