Our teachers are very friendly to us. We _____ friends since three years ago.A. have been B. have become C. would be
Li Wen’s parents took a 24-hour train and a 5-hour bus ride ______ to his school.
Keep away from smoking, please! It’s bad for our health, for the students!
Thomas was _______ excited at the exciting news that he could hardly say a word.
— We are going on a travel to Qingdao in six days. — .
Thanks to the computers, we do not have to spend a lot of time ________ boring numbers and information.