In fact, to move at any speed the polar bear ...

★ Lexico and Grammar

In fact, to move at any speed the polar bear uses ______ do most other mammals.

A. twice energy more than

B. more than twice energy

C. twice as much energy as

D. much as twice energy as

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______, the soil of the hill has been washed away.

A. Ploughed up and down for a long time

B. Ploughed for a long time up and down

C. Ploughing up and down for a long time

D. Ploughing for a long time up and down