He was very tired but he kept on working.

A. As hard as he work, he could not finish the job.

B. Despite he worked hard, he could not finish the job.

C. Though he worked hard, he could not finish the job.

D. Although hard work, he could not finish the job.

A. Despite her sick mother, she stayed at home.

B. Because of her sick mother, she stayed at home.

C. In spite of her sick mother, she stayed at home.

D. A & C are correct.

A. In spite of his old age, he can walk to the station.

B. Despite his old age, he can walk to the station.

C. Despite the fact that he is old, he can walk to the station.

D. All are correct

A. Tom went to work that he did not feel very well.

B. Tom went to work despite of the fact not feeling well.

C. Tom went to work because he did not feel very well.

D. Tom went to work despite not feeling very well.

A. Because of the rain, we enjoyed our trip.

B. Though it is raining, we enjoyed our trip.

C. Despite of the heavy rain, we enjoyed our trip.

D. Though it rained, we enjoyed our trip.

A. Although William suffers from a bad cold, he went to school.

B. Although William suffered from a bad cold, he went to school.

C. William went to school although he is suffering from a bad cold.

D. William went to school; he suffered from a bad cold although.