81. It's hard to say.（难说。） .

82. It's a long story.（说来话长/一言难尽。） .

83. It's a small world.（世界真小。） .

84. It's against the law!（那是违法的！） .

85. It's a good opportunity!（好机会！） .

86. It's dangerous!（危险！） .

87. May I help you?（我能帮忙吗？） .

88. No doubt about it.（毫无疑问。） .

89. That's bullshit!（废话！） .

90. Think it over.（仔细考虑一下。） .