[跟踪训练]
在空格处填入适当的词(1个单词)或所给词的正确形式
1．You must (arrival) at the airport two hours early.
2．I have only misty memories of my early (child)．
3．There is need for (improve) in your handwriting.
4．She responds that she feels a slight (cold)．
5． (private)，he said，was a very valuable thing.
6．In U．S.，if students have an argument the teacher，the teacher usually will not get angry.
7．They uncovered the statue the beginning of the ceremony.
