Question

presente perfecto progresivo ayúdenme porfavor, doy 20 puntos
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Answer 1

Respuesta:

a) has been using

b) have been growing

c) haven't been spraying

d) has been involving

e) have been planting

f) have been teaching

g) have been investigating

h) have been preparing

i) haven't been doing

Explicación:

Presente perfecto = Have + past participle

Ejemplo

He llegado

He jugado

Presente perfecto progresivo = Have +  been  + present continuous

Ejemplo:

a) ...familia ha estado usando....