66. In most Western countries, food prices is not as expensive as we imagine. (imagine) 67. Tom Ho others never exchange, which makes his parents very worried. (which) 68. In fact the aircraft is the world's most secure means of transport. (means) 69. The development of tourism has created many job opportunities. (create) 70. A child to eat the plight of his life, is a tremendous wealth. (suffer) 71. Love a child does not mean that he should meet all the requirements. (satisfy) 72. I know very well that person's life will face many challenges. (conscious) Thanks