题目内容
The flowers he bought will die unless ____ everyday.
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If ____ in class, you will have to clean the classroom for a week as a punishment.
Mimosa, 15 cm in height, is a sensitive small plant, which will close when ____.
Lei Feng was a person who was only too ready to help others, seldom____, refusing them when they turned to him.
--Those senior citizens treated should have been warned of illegal fund-raising.-- ____. But few could resist the temptation.
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