Question

encontre a alternativa correta :1-they are not jumping______the trampoline alternativas A-in B-on C-at . 2-she _______in the libray alternativas A-is study B-studyings C-is studying . 3-he is very good____biology alternativa A-in B-at C-on . 4-_________you tired after this big game? alternativa A-IS B-ISNT C-ARENT

Answer 1

1 - they are not jumping ON the trampoline (alternativa B)
2 - she is studying in the library (alternativa C)
3 - he is very good at biology (alternativa B)
4 - aren't you tired after this big game? (alternativa C)

Answer 2

1-ON
 2-she is studying
3-IS
4-ARENT