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

We should quickly find the solution to the problem. Otherwise, its impact on those concerned will increase

A. If we can solve this problem soon, we’ll lower the impact on all of our concerns 

B. By the time we solve this problem, the impact on those concerned will have been lowered 

C.  If all those concerned lower their impact, the problem will be better solved 

D. The sooner we find the solution to the problem, the lower the impact it has on those concerned

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

Michael put his mistake_____ to lack of concentration.

A. down 

B. over

C. through

D. up