Answer:
D.) have+verb=ing
Explanation:
The present perfect tense is used to explain something that happened in the past and continues to happen
D.) hAVe+VeRb=INg
EXPLanaTIoN:
The PREsENt pERFEcT TEnSe iS USeD To EXplaIN SOMeTHinG ThAT HapPENeD In THe PAsT ANd cONTInUEs tO HAPpEN