1.The driver refused to wait.
to wait - Infinitive
2.Panting , I boarded the plane under the reproachful gaze of the other passengers.
Panting – participle
3.We saw an army of ants lugging a fly wich was at least ten times the ant’s size.
Lugging – participle
4.On enquiring , the priest said that the temple found it difficult to get the bilva leaf.
enquiring - Gerund
5.It was not commercially economic to grow it.
to grow - infinitive
6.Very few flower sellers were willing to provide bilva leaves.
to provide – Infinitive
7.The greatest difficulty was in identifying the plants.
Identifying - Gerund
8.He had to consult many scholars.
to consult – Infinitive
9.The book succeeds in providing good leisure reading.
Providing – Gerund
10.It is one of the best occasions in recent times to raise a toast.
to raise – Infinitive
11.This strategy looks easy but is difficult to implement.
to implement – Infinitive
12.Indians are always comfortable playing against the wind as it easy to control you shorts.
Playing - participle
13.It is equally important to realize that she has a long career ahead of her.
to realize – Infinitive
14.India is faced with the challenge of sustaining its rapid economic groth.
sustaining - Gerund
15.India has committed itself to reading its carbon emissions by 20-25 per cent by 2020.
reducing - Gerund