1.Not until that day___the importance of good manners in a job interview.

1.Not until that day___the importance of good manners in a job interview.
A.did I realize B.I did realize C.I have realized D.Have I realized
2.If only I___ my watch
A.hadn't lost B.haven't C.am not losing D.don't lose
3.He claimed____ in the supermarket when he was shopping yesterday.
A.badly treated B.treating badly C.to have been badly treated B.to treat badly
4.I appreciate___to your birthday party at the restaurant.
A.to be invited B.to have invited C.having invited D.being invited
5.____such a good chance,he planned to learn more.
A.to be given B.having been given C.Having given D.Giving