She didn’t understand the benefits of volunteering until she joined this club.

A. If you listened to my advice in the first place, you wouldn’t be in this mess right now.

B. If you listen to my advice in the first place, you will not be in this mess right now.

C. If you had listened to my advice in the first place, you wouldn’t be in this mess right now.

D. If you had listened to my advice in the first place, you wouldn’t have been in this mess right now.

A. It was not until everyone had gone home that Olivia left the office.

B. It was until everyone had gone home that Olivia didn’t leave the office.

C. Not until everyone had gone home that Olivia left the office.

D. It was not until everyone had gone home did Olivia leave the office.

A. No sooner had he approached the house that the policemen stopped him.

B. Hardly he had approached the house that the policemen stopped him.

C. No sooner had he approached the when the policemen stopped him.

D. Hardly had he approached the house when the policemen stopped him.

A. But for his parents' support, he wouldn't have been successful in his career.

B. If his parents hadn't supported him, he would have been successful in his career.

C. Had it not been for his parents' support, he wouldn't be successful in his career.

D. Had his parents supported him, he wouldn't be successful in his career.

A. He could not devote his life to the revolutionary cause because of his poverty.

B. Although he was poor, he led a devoted life to the revolutionary cause.

C. If he had not been so poor, he could have devoted his life to the revolutionary cause.

D. He led a devoted life to the revolutionary cause, but he was so poor.

A. Joining the sports club is not useful for me.

B. It is useful for me to join the sports club.

C. I used to join the sports club.

D. I never like joining the sports club.