Найдите ошибки в следующих предложениях.
14.1 They are usually starting work at 9 o’clock.
14.2 Look! That man is having blue hair!
14.3 Do you study for your exams at the moment?
14.4 Dave has planned his holiday since Christmas.
14.5 She is typing twenty letters so far this morning.
14.6 The sun has been setting in the west.
14.7 We were sleeping for an hour when the phone rang.
14.8 He had been buying a new car last month.