28.The largest collection ever found in England was one of about 200,000 silver coins, _____ over 600 years old.
This is the _________ spot on which the first pilgrims landed in America.
After retiring, he was recommended to ____ gardening as a hobby.
I ________ thank you too much for all your help to my son while we were away from home.
. I'd really appreciate ________ if you would turn off the lights before you leave.
It never _____ humans until the mid1990s that some animals can be cloned.