1. having
Are you having fun?
Almost everyone in the class voted in favor of having a thank-you party for the teachers.
Having all of you here is more reassuring than having the police or anybody else.
It's very unlikely that the teacher will believe Tom's excuse for not having his homework done on time.
Being too busy with work is a problem, but then so is having too much free time.
A very elderly couple is having an elegant dinner to celebrate their 75th wedding anniversary.
His novels, having been translated into English, are widely read in America.
I think it's a shame that some foreign language teachers were able to graduate from college without ever having studied with a native speaker.
It must be nice having someone who sticks around even when times get tough.
A lot of people who have up until now been spending money having a good time now need to be more careful with their money.
Mother, having thought about it carefully, I don't feel I should marry him.
She bitterly regretted having said something that displeased her mother-in-law.
Her husband, having failed to obtain promotion, retired at the age of 55.
This beautiful autumn weather we've been having makes up for the wet summer.
Thanks for having explained to me at last why people take me for an idiot.