When a verb is placed immediately after a preposition the gerund form (infinitive+ ING) must be used.

Ex.: I am tired of waiting.

Exercise: Complete the sentences using the gerund of the verbs:

1-He is good at (tell)________stories.

2-They were fined for (be)________drunk.

3-You raised money by (seel)________new cars.

4-We are fond of (climb)___________.

5- Do you feel like (go) __________for a swim?