People know that smoking and drinking can shorten our lives dramatically. A. It was known that smoking and drinking can shorten our lives dramatically. B. Smoking and drinking are known to ha
People know that smoking and drinking can shorten our lives dramatically.
A. It was known that smoking and drinking can shorten our lives dramatically.
B. Smoking and drinking are known to have been able to shortening our lives dramatica
C. Smoking and drinking are known to be able to shortening our lives dramatically.
D. It is known that smoking and drinking can shorten our lives dramatically.