根据句以及单词首字母提示写出所缺的单词

根据句以及单词首字母提示写出所缺的单词
1.The twelfth month of a year is (D ).
2.4.It's (s )and hot in summer.
3.A:( )do you usually have English class?
B:(A )9:15.
大家加油加油加油加油,