a. 储蓄 b. 及时 c. 照亮 d. 尽快 e. 在正确位置 f. 短缺 g. 切断 h. 底线 i. 电流 j. 记住 71. be short of________ 72. save up_______ 73. in time _______ 74. bear...in mind ______ 75. bottom line_______ 76. as soon as possible _______ 77. light up _______ 78. electric current_______ 79. in place_______ 80. cut off _______