Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.

He cannot practice scuba diving because he has a weak heart.

A. It's I am that responsible.

B. It is I who am responsible.

C. It is me who am responsible.

D. It's that me is responsible.

A. Although Mary broke up with her boyfriend, she couldn't stand his complaining.

B. Mary broke up with her boyfriend because she couldn't stand his complaining.

C. Mary broke up with her boyfriend; however, she couldn't stand his complaining.

D. Mary broke up with her boyfriend in case she couldn't stand his complaining.

A. It was the garden and garage that Billy found his cat.

B. It wasn't the garden that Billy did not find his cat.

C. It wasn't the garden but the garage that Billy found his cat.

D. Billy could not find his cat anywhere, even in the garage.

A. He did not succeed as a professional writer until he was 20.

B. He did not write professionally until he succeeded at the age of 20.

C. He succeeded as a professional writer until he was 20.

D. He wrote professionally until he became successful at the age of 20.

A. Linda didn't believe that John lied to her.

B. Linda didn't know how John lied to her.

C. Linda didn't know that John lied to her.

D. Linda didn't know what John lied for.

A. Mai asked why they did not ask Mr Brown for help.

B. Mai begged Mr Brown for help to find the reason.

C. Mai suggested that they should ask Mr Brown for help.

D. Mai wanted to know why Mr Brown did not help.

A. He is unlikely to come early.

B. It is likely that he will not come too late.

C. It looks as if he will come late.

D. It seems that he will come lately.