To make members of team perform better, the trainer first of all has to know their _____ and weaknesses.
Father ____ his number in the phone book to make sure that he had got it right.
— More than thirty students competed ______ each other in the English competition. — But they could only compete ______ three medals.
--It’s reported that scientists have ________ an effective way to deal with H1N1.--Really? That’s great!
---- Did you have ________ fun at the party? ---- Yes. It’s ________ shame that you missed it.
It was my sister first had the idea to cycle along the entire Mekong River from ______ it began to where it ends.