Can I borrow your pen, please? is at home.——青夏教育精英家教网——

69. Can I borrow your pen, please?　　　　　　　 is at home.

68. You should brush your 　　　　　　　　　twice a day.

67. Mike does　　　　　　　　in math than I. He is good at math.

A、用方框内所给单词的适当形式填空。每空格限填一词，每词限用一次。

　 my　 well　 north　　 different　　 tooth

66. Are there any 　　　　　　　　between these two pictures?

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