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36. They often went to school by bike when they were young.

A. They used to went to school by bike when they were young.

B. They used to go to school by bike when they were young.

C. They are used to go to school by bike when they were young.

D. They are used to going to school by bike when they were young.

38. People believe that the Prime Minister will resign tomorrow.

A. It is believed to resign tomorrow.

B. The Prime Minister is believed that he will resign tomorrow.

C. The Prime Minister is believed to resign tomorrow.

D. People are believed that the Prime Minister will resign tomorrow.