把下列直接引语变为间接引语
1．“The service in the restaurant is very poor，” they complained.
→They complained_that the service in the restaurant was very poor.
2．“Don't go out alone at night，” he warned me.
→He warned_me_not_to_go_out alone at night.
3．Mr Wang said, “I will leave for Shanghai on business next month, children.”
→Mr Wang told the children that he would_leave_for Shanghai on business the_next_month.
4．“Are you interested in this？” he said to me.
→He asked_me_if/whether_I_was_interested_in_that.
5．I asked Tom, “How long have you been employed at this job？”
→I asked Tom how long he had_been employed at that job.
