By 2050, the population in this area is expected to double what of 2002.

When Tommy started to learn French, he had a difficult time ______ the words correctly

I have been saving money because I _____ buy a computer.

Although she had never met him before, she could fall into a ___________with him easily.

Unfortunately, Tom’s illness turned out to be extremely _____ so he was kept in isolation.

Two friends are talking with each other about a musical concert.

- A: “Hey, there is a musical concert in the park. Do you want to go seeing the band play?”

- B: “________.”

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