根据下列句子的句意、汉语提示或英语解释，写出空白处所缺单词的正确形式；每空一词。

1.He left home in a____ (匆忙) and forgot to turn off the light this morning.

2.Hearing the good news, we couldn't help____  (大笑).

3. In order to see the words on the blackboard more____ (清楚), she put on her glasses.

4.After a large____ (the meal you have in the morning), they set out for a hike in the mountain.

5.They had their school leavers’ party last ____ (the day between Friday and Sunday).

农场有一块三角形试验田，底长160米，高比底短85米．

①这块试验田的面积是多少平方米？

②农场用这块地的一半种小麦，共收小麦4500千克，平均每平方米收小麦多少千克？

辨字组词。

伯____  洽____  糊____  燥____

泊____  恰____  湖____  操____