Let’s (do) up the (bed)。 或者： Let’s (fold) up the (quilt)。 do up 的意思有：收拾，整理，修理，装饰，洗熨，梳妆，打扮 Let's do up this room first。
I'll do up your bicycle in no time at all。 We're getting a professional decorator to do the boy's bedroom up。 Ann asked her mother to do her dress up。
His coat was done up。 Mary has done herself up for the party。 fold up：（使）折起；（因大笑，疼痛）（使）弯起身子；坍塌，垮掉；破产，垮台，倒闭 You have to fold the letter up to fit it into the envelope。
你得把信折起来才能把它放进信封。 She folded up with laughter at the sight of the funny clothes。 她一看见那奇装异服就笑弯了腰。 The old shelf folded up under the heavy weight。
旧架子在重压下坍倒了。 The business folded up。 商行倒闭了。 make the bed 用在睡前或起床后都可以。
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