根据句意和提示写出单词,完成句子。每空一词。We should brush our ________________ (牙齿) after each meal.
On his mother’s ________________ (四十) birthday, he gave her a card and some flowers.
Does your father like _________________ (看) newspapers?
You may _________________ (借) the book for two weeks.
Now mankind is exploring those ___________________ (未知的)outer space in many ways.