68. An apple a day　 ▲　 (keep) the doctor away.

67．My mother always tries to make sure we eat 　▲　 (health)．

66．He has won the ▲ (man) 100-metre race.

65. The teacher has explained the new word　 ▲　 (两次)，but I still don't understand.

64. Friday is the　 ▲　 (六)day of a week.

63．Tom，there are many mistakes in your composition. 　▲ (改正)them after class.

62. Reading Harry Potter has become very popular．　 ▲　 (在……之中)many students these days.

　　 根据下列句子所给的汉语或英语注释．写出句子空缺处各单词的正确形式‘每空限填一词)。

61. Tree Planting Day comes in 　▲　 (三月)in China.