A rolling Stone gathers no moss. Here 'rolling' is-

He watched the boat ___ down the river.

I am looking forward to____ you.

Would you mind ____?

He insisted ___ there.

I like ____ the piano.

I heard the little boy ____?

Ram as well as Rahim ____ there.

Neither Rina nor Simi ___ qualified for the job.

Either of the boys ___ done the work.

Every member of my family ___ here tonight.

None of the students ___ a car.

A number of banks ___ computers for Their transactions.

Ten thousand dollars ___ a lot of money.

Forty yards ___ a good distance.

One should obey ___ parents.

Slow and steady ___ the race.

To err ___ human.