The workers were so tired that they fell asleep where they ______without undressing.

—We all had a lot of fun at the barbecue yesterday. Pity you weren’t there. — I really should have gone with you, but I ________ on some remaining problems. 

(安徽省马鞍山市2009届高三第一次教学质量检测)When she realized I      her，she quickly made a pose，smiling

If you can’t understand these sentences, your constant lack of handing in homework ____.

——Honey, this is a present for your birthday.——Ah! A pair of shoes, a well-known brand—Nike! I think it must _______ comfortably.