Respuesta:
1) present perfect
2) past perfect
3) Past perfect progressive
4) present perfect progressive
Explicación:
el verbo ING indica el progressive
1. present perfect
2. past perfect
3. past perfect progressive
4. present perfect progressive
en el present perfect se usa Have+ verb en participio
en el past perfect se usa had + verb en participio
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Verified answer
Respuesta:
1) present perfect
2) past perfect
3) Past perfect progressive
4) present perfect progressive
Explicación:
el verbo ING indica el progressive
Respuesta:
1. present perfect
2. past perfect
3. past perfect progressive
4. present perfect progressive
en el present perfect se usa Have+ verb en participio
en el past perfect se usa had + verb en participio