You have to be a fairly fluent speaker to listeners’ interest for over an hour.
I met him____________________. A. the first time B for the first time C. in the first time D. at the first time
He was the best_____playing chess.
As is known, mobile phone make it possible for people to____each other conveniently.
She knocked ________a cup of tea.
He’ll be _____upon us at any moment.