i am in class 7 为什么不用in the

i am in class 7 为什么不用in the I am the tallest in my class ()?-I am in Class One I am in class three I am in Class (3) 连词成句 am,I,youngest,the,in,class,the I am in Class 1,Grade 7.为什么不在in后面加the?另外,the的用法是什么, I am learning ________(paint) in the class. As( for) math,I am the best in my class I am the tallest in our class 转换 第九题 I am the t------ in my class. I am learning _____(paint) in the class必采纳