66. My sister said to me that he would take a cooking class before he went to college

67. Nam said he really wished he could make informed decisions

68. Mr. Nick said he would go to his village the following week

69. It's important to keep the environment clean

70. I have no idea when to take that English test

71. The prospect of moving to a new flat on the outskirts of Ha Noi cheered me up

72. Why did you dress up yesterday?

73. Although the weather was bad, we went out for a picnic

74. I suggest going to the beach this weekend

75. Although he had a headache, he went to work

76. Because his leg was broken, he didn't take part in the contest yesterday

77. Although the weather was bad, we went out for a picnic

78. He used to have a lot of money, but now he doesn't

79. It has been discovered by scientists that there is water on Mars

80. It is expected that the professor will arrive this morning