Michael will sing a song ________ .
B. when the school held the beauty contest
C. before the school held the beauty contest
Nam usually ________ to the theme park near his house when he was a little boy.
Since Tom moved to Vietnam, he ________ a big fan of Pho and Banh Mi.
Tim’s mother won’t allow him to eat hamburgers and chips ________.
After the man had stopped his car, he walked out of it, opened the boot and ________ some goods.
I was surfing the Internet while my classmates ________ to each other.