---Would you please repeat the grammar rules again? ---Of course, but I am sure that you _______ to me carefully, as I have told you twice already.
— Have you ? — No. I had the wrong number.
Studies show that people are more to suffer from back problems if they always sit before computer screens for long hours.
Ricky stepped forward to front of the stage and began to sing in loud voice.
but he still can not understand it.
Mr. Lee, who as a guide for over 10 years, is now a manager in a big travel agency.