In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.

For the past few months Twinkle and Himanshu Kalia have been relentlessly (1)______ to ensure that Covid patients and those suspected to (2)______ reach the hospital by providing them ambulance service. Twinkle and her husband (3)______ drive two of their fleet of 10 private ambulances. Twinkle herself caught the virus (4)______ driving patients to hospitals or funeral grounds. But she did not (5)______ her work and started working once she was fit.