ABOUT 15,000 YEARS AGO, NORTHERN WISCONSIN ______ UNDER ICE A MILE DEEP
2. About 15,000 years ago, northern Wisconsin ______ under ice a mile deep.
A. buried B. was burying C. was buried D. had buried
2. About 15,000 years ago, northern Wisconsin ______ under ice a mile deep.
A. buried B. was burying C. was buried D. had buried