81. The law requires that everyone …………. his car checked at least once a year. A. has                B. have                 C. must have                 D. be having 82. It is not necessary that he …………….. an entrance examination to be admitted to an American university. A. take               B. takes                     C. must take             D.be taking 83. It is imperative that everyone ……………… home immediately. A. must return             B. return               C. returns             D. to return 84. It is essential that vitamins …………… either by foods or by supplementary tablets. A. are supplied       B. be supplied           C. can be supplied           D. supplied 85. The City Planning Department proposed that the new highway ………... in the fiscal year 2015. A. be built          B. will be built         C. would be built        D. is to be built 86. It is important that you ………………. late. A. not be                B. will not be               C. are not                D. be not 87. It is essential that no one …………….. to the meeting hall without proper identification. A. is admitted                                 B. can be admitted C. be admitted                                D. admitted 88. The manager asked that we ………… sure to lock all the doors before we left. A. were                    B. would be                    C. be               D. must be 89. It is vital that no one else ……….. about the secret military operation near the border. A. know                   B. knows             C. can know            D. could know 90. It is the recommendation of the consultants that the patient ………….. under medical supervision. A. treating            B. treated            C. be treated              D. is treated