168、Is this seat taken. 169、It all depends. 170、It can happen to anyone. 171、It doesn't make any difference. 172、It doesn't matter to me. 173、It doesn't work. 174、It drives me crazy. 175、It isn't much. 176、It really comes in handy. 177、It slipped my mind. 178、It takes time. 179、It will come to me. 180、It will do you good. 181、It won't happen again. 182、It won't take much time. 183、It won't work. 184、It's nice meeting you.
