用适当的单词填空，使句子通顺，合理，每空只填一个单词。
（1）He is an                      .He draws very well.
（2）October comes after                  .
（3）He is our teacher and we are his                .
（4）Sam is in Class1, Tom is in Class 2.They are in different                .
（5）We usually go to school five                  a week.