单项选择题

Directions: There are 10 questions in this part of the test. Read the passage through. Then, go back and choose one suitable word or phrase marked A, B, C, or D for Each blank in the passage. Mark the corresponding letter of the word or phrase you have chosen with a single bar across the square brackets on your machine-scoring Answer Sheet.
What relationship is regarded as good for partners There is no universal, ideal model 1 which a relationship can be evaluated. A "good relationship" is one that works for both partners and effectively supports them in achieving their goals. If this is not working at some point, it does not 2 mean that the couple requires therapy. All relationships tend to encounter problems during 3 periods and at different stages, and many couples have a good ability 4 their difficulties without professional help. However, some may find that they are continually unhappy with their relationship. Sometimes one partner feels frustrated and misunderstood 5 his or her mate is totally unaware of the situation.
If the couple are unable to resolve issues in a 6 that is acceptable to both partners, professional help should be considered. Many couples only consider therapy as a last 7 . It may, however, be helpful at any time. 8 , seeking therapy soon after things get "stuck" prevents a 9 of frustration and disappointment. The aim of couple therapy is not only to help the couple deal appropriately with immediate problems, but also to achieve better ways of relating 10 .

A. certainly
B. definitely
C. necessarily
D. fundamentally