6.The father expressed of what the son did. A.compliment B.approval C.reassurance D.sincerity Key:B 7.The doctor is about the recovery of the patient. A.effective B.essential C.cooperative D.confident Key:D6. The father expressed _____ of what the son did. A. compliment B. approval C. reassurance D. sincerity Key: B 7. The doctor is _____ about the recovery of the patient. A. effective B. essential C. cooperative D. confident Key: D