there are 39 students in my class in all,21 (of which) are g

there are 39 students in my class in all,21 (of which) are g There are ___ of students are boy in my class. There are twenty students in my class and only one of ___a g There are 55 students in my class There are _____ students in my class. there are same students in my class 一道英语定语从句问题：There are 40students in our class in all,most of There are 40 students in my class.18 of them are boys,and th There are nineteen students in my class and n() of them are There are 40 students in my class.There are 40 students in y There are twenty students in my class,____seven girl. there are 52 students in my class?52提问