请问谁有新概念第一册72课后的那个测试题的答案啊!万分感谢!

不就是过去时吗？
A
1.rained
2.snowed
3.boiled
4.enjoyed
B
1.What did they do yestday? They cleaned their shoes yestday.
2.What did he do last night? He opened the box last night.
只要在动词后加上“ed”就可以了。