Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

This, like every drug discovery in the world, are also a risky venture with dubious chances of success. 

Mark the letter A, B, C, or D sheet to indicate the correct answer to each of the following questions.

 You'd better _____ a commitment to being a volunteer on a regular basis.

Mark the letter A, B, C, or D sheet to indicate the correct answer to each of the following questions.

 Don't you think you should apply for the job _____ writing?

Mark the letter A, B, C, or D sheet to indicate the correct answer to each of the following questions.

 Mary demanded that the heater _____ immediately. Her apartment was freezing.

Mark the letter A, B, C, or D sheet to indicate the correct answer to each of the following questions.

 The _____ for this position starts at thirty thousand euros per year

Mark the letter A, B, C, or D sheet to indicate the correct answer to each of the following questions.

True Blood is my favourite TV series, _____ I don't have much time to watch it often. 

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

He said that he would take responsibility for his company's damage to the area. But then he denied that.

Mark the letter A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word (5) in each of the following questions.

The atmosphere at work was so bad that Brian eventually decided to hand in his notice.