ПОЖАЛУЙСТА, ПОМОГИТЕ, ЭТО ОЧЕНЬ Главно!1._______ he _______ his schoolbag with textbooks

ПОЖАЛУЙСТА, ПОМОГИТЕ, ЭТО ОЧЕНЬ ВАЖНО!
1._______ he _______ his schoolbag with textbooks and workbooks yet?
1)Had ... fill
2)Have .. filling
3)Having ........ filt
4)Has .... filled
2.The homework ______ by students now.
1)was done
2)was being done
3)is being done
4)will be done
3.I ______ interested in learning more about that subject.
1)isn't
2)am not
3)are not
4)aren't
4. The students _______ not satisfied with their exams' results.
1)is
2)has
3)am
4)are