Mining over 2,000 years ago, copper is one of the earliest known metals.
=> having been mined
__________ John Kennedy was elected president, he was the youngest American President ever.
The pool should not be made so deep______small children can be safe there.
It is stated in the passage that____________________ .
______ his brother, Mike is active and friendly.
Stephanie: "Oh, no! I left my book at home. Can I share yours?" Scott: "______ "
The word "allocated" in the passage mostly means "______".
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
Education in many countries is compulsory________the age of 16.
Tom: "___________________ " Mike: "I won't say no!"
Regular exercise and good diet will bring______fitness and health.