I don't know what to do. 该怎么办呢? What am I supposed to do? 我该怎么办? We are in trouble. 这下可麻烦了。 It's a hassle. 那很麻烦。 It's really a difficult problem. 这真是个难题。 I don't know what to say. 我不知道说什么才好。 You got me. 这下可难住我了。 He's a nuisance. 他特招人讨厌。 You asked for it. 自作自受。 Oops! 哎哟! Oh, no! 噢!不! That's the hard part. 这正是难点。 I feel guilty. 我感到内疚。 You look puzzled. 你看来很困惑。 The idea haunts me. 那个念头总是萦绕着我。