I. Fill in the blanks with proper prepositions. 1. He was indifferent _______ his personal appearance even in formal situations. 2. Something is wrong _______ her eyesight. 3. Students should not be too particular _______ what they wear. 4. _______ the occasion of the Spring Festival, they had a happy family reunion. 5. Small children usually do not connect thunder _______ lightning. 6. Do you feel _______ having a walk with me? 7. As Mike gets older he begins to reflect _______ the uncertainty of life. II. Complete the sentences with the following words. concern grateful impetus medium transmit unsteady 1. We show great _______ for the safety of the lost boy. 2. He felt _______ on his feet after drinking five whiskies. 3. Your encouragement gave _______ to me and eventually I accomplished the job. 4. Copper is a good _______ for conduction of heat and electricity. 5. It’s lucky that the parents _______ some of their fine qualities to their children. 6. She is _______ to the friends who have helped her.