(____) He is making a birthday card.

(____) He's in his room.

(____) When is Jack's birthday?

(____) Where's Jim?

(____) Who is he making it for?

(____) What is he doing?

(____) Tomorrow.

(____) He is making it for his friend，Jack.

写出下列动词的过去式。

①have/has____      ②play____      ③sit____      

④decide____       ⑤hit____   

①我们带着鲜艳的红领巾，像烈士陵园走去。____

②国庆节已后，学校要举行一次朗颂比赛。____

③海面上飘浮着几只小小的鱼船。____

④小明豪不迟疑地从坐位上站了起来。____

如图1，一个长方体从正方形的左边平移到右边，每秒平移2厘米，如图2是长方形平移过程中与正方形重叠的关系图．

（1）平移4秒和6秒重叠面积各是多少？把上图补充完整

（2）正方形的边长是多少厘米？