be concerned about 328.05 I am concerned about ice dams.
be worried about 201.98 I was a bit worried about my exams.
be optimistic about 71.30 Analysts were optimistic about ING.
be serious about 62.34 But be serious about it.
be excited about 43.19 But we were excited about racing.
be cautious about 41.80 But he is cautious about it.
be enthusiastic about 40.88 I am very enthusiastic about the project.
be skeptical about 38.45 But he was skeptical about tolerance.
be nervous about 32.13 Are they nervous about fire hazards?
be happy about 25.28 He was not happy about it.