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

Mr. Albert is intelligent but he_______ common sense.

A. fails

B. lacks

C. misses

D. lacks of

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

A. explanation 

B. experiment 

C. accomplishment 

D. discovery 

It turned out that we ______ rushed to the airport as the plane was delayed by several hours.

A. hadn’t

B. should have

C. mustn’t

D. needn’t have